Definition: 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: change. Sentence 1: Ben went to the supermarket to buy some snacks. Sentence 2: As he leave the supermarket he noticed his change was not enough. Sentence 3: He quickly went back to the supermarket and told the cashier about it. Sentence 4: But the cashier insisted that she gave the right change. Choices: a. Since then, he checks his change before leaving the supermarket. b. I felt very proud of myself once completed.
Output:
b