You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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.
Solution: B
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.

New input: Sentence1: Erica had to decide whether to take her final or go help friends. Sentence2: School was important to her, but her friend was in an emergency. Sentence3: Erica told her professor her situation. Sentence4: The professor said she could make up the final at a later date.
(A) Erica told her professor that she was being unfair. (B) Erica was so grateful that her professor was understanding.
Solution:
A