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: Joy was driving home after a long day of work. Sentence 2: A small truck bumped her from behind. Sentence 3: Joy stopped and walked up to the driver. Sentence 4: The driver agreed that it would be best to call the cops. Sentence 5: Once Joy called the cops, the driver drove off. Choices: a. Pros over Cons. b. Cookie Surprise.
Output:
a