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: Lying compulsion. Sentence 1: Sophie had a big failing and lied all the time. Sentence 2: Her mother told her that if she lied again, she'd be punished. Sentence 3: Sophie didn't want to be punished but couldn't help lying. Sentence 4: When her mother caught her lying again, she sent Sophie to her room. Choices: a. The new house was going to be great. b. Sophie was sad, but by herself, she found more ways to lie next time.
b