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: Sue was starting a new school. Sentence 2: She needed a new backpack. Sentence 3: She told her mom and they went shopping. Sentence 4: Sue found the perfect backpack. Sentence 5: She was finally excited about school. Choices: a. New Backpack. b. Piano.

a