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: Justin stared at the wall. Sentence 2: THe clock seemed to be in slow motion. Sentence 3: He wanted to go to his friend's house after school. Sentence 4: As soon as the clock struck three, he flew out of the classroom. Sentence 5: It was finally time to leave! Choices: a. Scrapbook. b. The Clock.

b