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: Loose Laces. Sentence 1: Jimmy's mother told him to tie his laces as he left the house. Sentence 2: She warned him that one day he was going to trip over them. Sentence 3: He just laughed at her as he walked out the door. Sentence 4: He wasn't laughing when she met him at the hospital later that day. Choices: a. However, Jim denied ever taking part in it. b. He had tripped over his laces on the stairs, fell and broken his arm.
A:
a