Q: In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.
Title: French test. Sentence 1: Bob has a French test tomorrow. Sentence 2: He has been studying constantly. Sentence 3: He is still nervous. Sentence 4: Bob decided to pull an allnighter anyway. Choices: a. She called the exterminator the next day. b. Bob passed his test with a perfect score.
A:
a