Q: 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.
Title: Soda Machine. Sentence 1: My wife and i were sitting on our building bench. Sentence 2: We talked about how the building used to have a soda machine. Sentence 3: I saw a teen center nearby and wondered if they had a machine. Sentence 4: My wife walked into the center to look around. Choices: a. Bob negotiated paying three dollars for a two dollar hot dog. b. Sad to say, she could not find a soda machine.
A:
a