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: The girls had been friends for years. Sentence 2: They were especially close this year. Sentence 3: They sat by each other at school and on the bus. Sentence 4: The girls spent so much time together they got tired of each other. Sentence 5: They had a huge fight and weren't friends anymore! Choices: a. The Best Friends. b. The Fall Leaves.

a