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: Getting good at math. Sentence 1: About a year ago we noticed that my daughter needed help with math. Sentence 2: We decided to let her take tutoring. Sentence 3: She resisted the idea a lot initially. Sentence 4: It was long process for her to start working on it willingly. Choices: a. She worked for six months, then moved on. b. Since then with practice she has gotten really good at math.
Output:
b