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 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: Walking At Night. Sentence 1: Bob was on the phone all day. Sentence 2: It was raining something fierce when he finally wasn't. Sentence 3: Bob was sad he hadn't been able to go for his daily walk. Sentence 4: When it stopped raining he saw there was a full moon. Choices: a. Bob went for his walk at midnight and was happy. b. The artist began his set amidst excited cheers.
A:
a