Given the task definition and input, reply with output. 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: Money. Sentence 1: Lily had been working for months. Sentence 2: She saved up $10,000. Sentence 3: Lily had never had so much money! Sentence 4: She counted it over and over again. Choices: a. Then she took it to the bank and put it in her savings account. b. They arrived to Vegas hours later and Joe was excited.
b