Given the task definition and input, reply with output. 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'.

Sentence 1: Andy is a unique character. Sentence 2: Being friends with him is like an acquired taste. Sentence 3: At work, his friend Jim played a prank on him. Sentence 4: Andy was so mad that he punched a hole in the wall. Sentence 5: Jim didn't know Andy had an anger problem. Choices: a. The Jazz Band. b. Prank.
b