You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: Charlie was taking a walk last week. Sentence 2: Out of nowhere, a red truck came barrelling down the road. Sentence 3: Charlie couldn't get out of its way in time. Sentence 4: He was hit by the truck and had to go to the hospital. Sentence 5: Luckily, his only injury was a broken leg. Choices: a. Home School. b. Accident.
Output:
b