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: cabin. Sentence 1: The settler family set out to build a cabin. Sentence 2: They cut many trees and prepared them carefully. Sentence 3: Slowly and with a lot of hard work, they gathered all the wood. Sentence 4: Over a few months they pieced the cabin together. Choices: a. They finished it just before winter and had warmth for their family. b. It was the worst day for him.
b