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In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Article: Homework can put you in a bad mood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay. 
 Question: Researchers did experiments on kids in order to find out _ . 
 Options: (A) how they really feel when they are learning (B) whether mood affects their learning ability (C) what methods are easy for kids to learn (D) the relationship between sadness and happiness
Solution: B
Why? It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment. So, B is the correct answer.

New input: Article: Beijing City International School Position: IT manager Major Duties and Responsibilities: Prepares and carries out the annual budget of the department. Builds and develops the whole school IT system Provides excellent IT services with IT team for teaching and business. Requirements/Qualifications: Bachelor or above,  majoring in Information Technology or Finance. Good command of both Chinese and English Minimum 5 years working experience, 3 years in a managerial level Able to work in a collaborative style KAI CABLE INC. Position: Sales Internship Major Duties and Responsibilities: Builds and develops good relationship with new customers Maintains strong relationship with the existing customers Explores potential customers further Conducts market ~ competitors analysis to improve customer satisfaction. Requirements/Qualifications: Graduates with Bachelor degree. Major in Finance, Economics, International Trade. Fluent English (in both written ~ spoken) and Mandarin . Familiar with MS office, especially Excel and PowerPoint and Internet application Willingness to accept challenges and work under pressure. Strong sense of responsibility. Prepare for business trainee. 
 Question: Both of the recruiting ads include the following information EXCEPT  _  . 
 Options: (A) positions available (B) working duties (C) a good command of computer skills (D) the degrees needed of the applicants
Solution:
C