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: Horatio is enrolling in college next fall. Sentence 2: He decides he needs something to keep all his books in. Sentence 3: Horatio buys a great backpack at a store. Sentence 4: Now he feels prepared for college. Sentence 5: He is excited to start his first day at college. Choices: a. ID. b. Horatio Buys A Backpack.

b