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: This past weekend, we had to leave my dog with a pet sitter. Sentence 2: I packed his things in a bag and we drove to her house. Sentence 3: I was worried about being away but he was excited to go on a car ride. Sentence 4: When we arrived, the pet sitter was very reassuring. Sentence 5: My dog did a great job, but I'm glad he's back home with me, now. Choices: a. Being a Gentleman. b. Pet Sitter.

b