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 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: Ronald Cleans The Floor. Sentence 1: Ronald notices there are crumbs on his floor. Sentence 2: He decides to clean them thoroughly. Sentence 3: When they're clean he feels much better. Sentence 4: He is surprised he had let so many crumbs collect there. Choices: a. He garnished the drinks with a lime wedge. b. Ronald is glad he cleaned the floor.
b