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: Jane was driving home from work. Sentence 2: She got a flat tire. Sentence 3: A police officer noticed. Sentence 4: He offered to change her tire. Sentence 5: Jane was extremely thankful. Choices: a. Vertigo. b. Roadside Assistance.

b