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.
Q: Title: Waiting for the Bus. Sentence 1: Kevin was waiting for the bus. Sentence 2: The bus was supposed to have arrived five minutes prior. Sentence 3: Kevin looked back at the bus schedule. Sentence 4: He was actually five minutes early. Choices: a. The bus arrived soon afterwards. b. She looked so much better.
A:
a