Given the task definition and input, reply with output. 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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Title: Scary Movie. Sentence 1: Matty was five and loved scary movies. Sentence 2: He begged his mom to let him stay up late to finish a horror movie. Sentence 3: She warned him he might have nightmares, but finally she gave in. Sentence 4: But sure enough, that night Matty woke screaming from a bad dream! Choices: a. He kept with his program until he was a non-smoker! b. He sobbingly agreed to listen to his mom's advice from now on.
a