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: Timmy's Fish Died. Sentence 1: Timmy came home after school. Sentence 2: He walked in his room to feed his fish. Sentence 3: Timmy noticed his fish was upside down. Sentence 4: Timmy called for his Mom. Choices: a. She cleaned it up and that made her happy. b. His Mom informed Timmy that the fish had died.
b