You will be given a definition of a task first, then some input of the task.
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: Babysitter. Sentence 1: Once I had a babysitter who was kind of mean. Sentence 2: She blew up a balloon and gave it to our cat. Sentence 3: The cat played with the balloon until it popped. Sentence 4: The babysitter laughed hysterically when the cat screamed and ran. Choices: a. I asked my parents to not use that babysitter any more. b. She told me my parole ended 5 months ago!
Output:
a