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: Hide and seek. Sentence 1: Tina and Fred wanted to play hide and seek. Sentence 2: They tried finding the best hiding places. Sentence 3: Finally Tina hid in the bathroom. Sentence 4: Fred couldn't find her. Choices: a. It took him an hour to find her. b. Jane had to empty and clean her garbage bin.
a