Definition: In this task, you're given five sentences, numbered 1 through 5, and two options a and b for possible titles for the story. Your job is to choose the title that better fits the story. Indicate your choice by 'a' or 'b'.
Input: Sentence 1: Sierra was playing with her cat in the living room. Sentence 2: She was petting the cat's fur when she noticed some little black dots. Sentence 3: Upon closer inspection she realized her cat had fleas. Sentence 4: She made an appointment with the vet right then. Sentence 5: The bugs cleared up quickly with some medication. Choices: a. Cold Feet. b. The Bugs.

b