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.
Input: Title: AC. Sentence 1: We had to watch my sister-in-law's apartment today. Sentence 2: She had an inspection but had to work. Sentence 3: She left the ac on when she went to work at 5:30. Sentence 4: When we arrived at 8:45 the place was freezing. Choices: a. In the morning his family teased him because he slept through it. b. We turned the ac off and turned it back on when we left.
Output:
a