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: Change. Sentence 1: Johnny picked up a bag of chips in a corner store. Sentence 2: He paid for the bag of chips. Sentence 3: He noticed that the cashier gave him an extra dollar in his change. Sentence 4: He went back inside the store to return the dollar. Choices: a. He made $300,000 and bought only kids expensive Christmas gifts. b. The cashier smiled and thanked him for his deed.
A:
a