Detailed Instructions: 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.
Q: Title: Test. Sentence 1: John needed to study. Sentence 2: He has a test tomorrow. Sentence 3: He stayed up all night. Sentence 4: He was ready for the test, although he was tired. Choices: a. Her friends were very impressed and said she had become a great cook. b. He aced it.
A:
a