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: Losing Things. Sentence 1: Tom was walking when he realized he had dropped his wallet. Sentence 2: He traced back his steps to the store and couldn't find it. Sentence 3: Tom went into the store and asked if anyone had turned in a wallet. Sentence 4: The clerk handed Tom a wallet with his ID on top of it. Choices: a. But thankfully it turned out great. b. Tom smiled said thanks and put the wallet in his front pocket.
A:
a