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: Brett forgot his umbrella that morning. Sentence 2: As he feared, it was a huge mistake as it started to rain. Sentence 3: He accelerated his stride. Sentence 4: He tried to hide his head under his briefcase. Sentence 5: But when he arrived at work he was soaked through and through. Choices: a. Missing umbrella. b. English Test.

a