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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Title: Luck of the Spin. Sentence 1: Every March the family travels to Las Vegas. Sentence 2: They love the town because there is so much to see and do. Sentence 3: The shows are always the family's favorite things to see. Sentence 4: They stay is a nice hotel every trip there. Choices: a. They finally realized that the top of the mountain had the best view. b. On their last day they always hit the casinos.
b