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: Ana goes to vegas. Sentence 1: Ana has been working hard all year long. Sentence 2: But now it was time for a vacation. Sentence 3: She decided she would head to Las Vegas. Sentence 4: She had a lot of fun in Las Vegas. Choices: a. She will never forget all the fun she had in Las Vegas. b. And tells him that he has lost his job.
b