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: The man put on his uniform. Sentence 2: It was his only one. Sentence 3: He looked in the mirror. Sentence 4: His uniform was dirty. Sentence 5: The man wore his dirty uniform to work. Choices: a. scratch. b. uniform.

b