In this task, you're given four sentences of a story written in natural language. The given story is not complete and your job is to complete the story by selecting one of the end sentence choices from (A) and (B), such that the story does not sound complete and coherent, i.e., select an incorrect end sentence.

Let me give you an example: Sentence1: Rick grew up in a troubled household. Sentence2: He never found good support in family, and turned to gangs. Sentence3: It wasn't long before Rick got shot in a robbery. Sentence4: The incident caused him to turn a new leaf. 
 (A) He is happy now. (B) He joined a gang.
The answer to this example can be: B
Here is why: As mentioned in fourth sentence, the incident turned a new leaf to Rick's life; so, he must be happy now. Also, he was previously in gang, so, this incident cannot make him to join a gang. So, B is incorrect.

OK. solve this:
Sentence1: Caroline was a student in medical school. Sentence2: Caroline worked very hard to get good grades. Sentence3: One day Caroline failed a test by one point. Sentence4: Caroline was very frustrated but she continued to study hard. 
 (A) But she gave up. (B) Later, she passed the test.
Answer:
A