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 had become frustrated with his job. Sentence 2: His co workers don't work as hard as he does. Sentence 3: His boss also takes him for granted. Sentence 4: Brett found another job at a better company. Sentence 5: He left all the ungrateful people behind. Choices: a. New Job. b. Running out of Time.

a