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: Jessica and Manny were roommates. Sentence 2: They were also best friends. Sentence 3: They started to argue over household chores. Sentence 4: Manny decided to move out. Sentence 5: They were no longer friends. Choices: a. Roommates. b. Energy.

a