Q: 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: Cat and Dog. Sentence 1: Three dogs were trotting down the street. Sentence 2: They spied a cat in someone's yard and began barking at it. Sentence 3: One brave dog approached the cat, hoping it would run. Sentence 4: Instead, the cat hissed, puffed itself up, and clawed the dog's nose. Choices: a. The dog began howling and ran back to its companions. b. Both of my arms were sore for a week.
A:
b