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: A police officer pulled me over. Sentence 2: He asked to see my papers. Sentence 3: I showed him my license and insurance. Sentence 4: He thanked me for showing him. Sentence 5: He let me go with a warning. Choices: a. Police Officer. b. Test.

a