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: My 99 year old friend Ben is hard of hearing. Sentence 2: I first met him two years ago. Sentence 3: He invited me to his apartment. Sentence 4: His unit was the only one in the building with a bell. Sentence 5: Ben said the property manager installed it just for him. Choices: a. Early to work.. b. Bell.

b