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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.
Q: Title: Broken Belt. Sentence 1: Sean was on a diet. Sentence 2: He lost a lot of pounds. Sentence 3: Eventually his pants fit too big. Sentence 4: Even his belt was hard to fit. Choices: a. He had to get a new smaller one. b. Kim was very upset with her landlords.
A:
a