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: The Maniac. Sentence 1: Joyce never got along with her brother, she thought he was crazy. Sentence 2: He would sleep every night for only 3 hours exactly. Sentence 3: He often murmured things to her while she was walking by. Sentence 4: She thought he was harmless until the day police arrived at her door. Choices: a. They arrested her brother for the connection of a 3 people murder. b. They never found Devo and until this day wonder where he went.
a