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: Ted was always volunteering at the homeless shelter. Sentence 2: There was one homeless man he became good friends with. Sentence 3: The man had been homeless for 20 years. Sentence 4: After years of friendship, Ted let the man stay at his house. Sentence 5: In return, the man would do housework for Ted. Choices: a. Had enough. b. Mutually Beneficial.

b