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: Carl was riding his dirt bike. Sentence 2: He tried to make a jump. Sentence 3: He crashed and hit the ground hard. Sentence 4: Carl broke his leg in two places. Sentence 5: He had to get medical help. Choices: a. My Sister. b. Broken Bones.

b