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: Tom was using a computer. Sentence 2: He was transferring files from his thumb drive. Sentence 3: Tom's friend didn't realize it. Sentence 4: He accidentally pulled the thumb drive out. Sentence 5: Tom lost several files. Choices: a. Store Alarm. b. Messed Up Thumb Drive.

b