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: Miles wanted to join his school's orchestra. Sentence 2: He asked his mother for permission to rent an instrument. Sentence 3: His mother said he could play either the cello or viola. Sentence 4: Miles decided on the viola since it was smaller and easier to carry. Sentence 5: Miles looked forward to learning how to play a new instrument. Choices: a. Orchestra. b. Sam wins a prize.

a