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: Surprise. Sentence 1: Cay was so depressed on the morning of her 14th birthday. Sentence 2: Her parents and sister had all forgotten! Sentence 3: She moped through school all day, unhappy about it. Sentence 4: But when she got home, a dozen people yelled SURPRISE! Choices: a. Cay was so happy, she burst into tears! b. After a few months, he had lost fourteen pounds.
Output:
a