Definition: 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.
Input: Title: The Play. Sentence 1: I really wanted a part in the school play. Sentence 2: I auditioned for a singing role. Sentence 3: Unfortunately, I was instantly rejected. Sentence 4: I still got a chance to be a part of the play. Choices: a. They let me open and close the curtains. b. She helps him up and drives him to the hospital.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
a