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: What Goes Around. Sentence 1: George was running late for his Valentine's day dinner with his wife. Sentence 2: He picked up a really beautiful bouquet of flowers and hailed a taxi. Sentence 3: After getting settled inside, he realized he knew the driver! Sentence 4: It was Rob, the quarterback from high school who had picked on George! Choices: a. Spencer had spent too much money and maxed out his credit card. b. George just smiled and enjoyed the envious expression on Rob's face.
Output:
b