Please answer the following question: Write a multi-choice question for the following article, with the given choices and answer: Article: It's Sunday today. Students are having good time in the park. Look, there is a table under a big tree, three students are sitting there. Lucy is reading a book, she looks very happy. Next to her is another girl, she's Mary. She is eating apples with her friend Jean. They think the apples are very delicious. Other girls are drawing pictures there.In the middle of the park, there is a playground. There are four boys, they are playing basketball. Lisa is watching them, and singing beautiful songs. Near the lake, Mr. Li is telling interesting stories for other students, they are so happy and relaxing. Options: A She is playing football. B She is singing songs. C She is reading a book. D She is listening to stories. Answer: C She is reading a book. Question:
Answer:
What is Lucy doing in the park?