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: Cindy was riding her bicycle. Sentence 2: But she wasn't wearing a helmet. Sentence 3: While riding across the street, a car almost hit her. Sentence 4: And Cindy felt unsafe without a helmet from then on. Sentence 5: So she bought a nice helmet and wore it on every bike ride. Choices: a. Stormy season. b. No Helmet.

b