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: Colby's teacher had just assigned the class homework. Sentence 2: He was upset he had homework. Sentence 3: Colby called his teacher a name under his breath. Sentence 4: The teacher heard Colby. Sentence 5: She assigned Colby extra work. Choices: a. Cat Lover. b. An Extra Assignment.

b