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: I yelled at a telemarketer yesterday. Sentence 2: He wanted to sign me up for a new credit card. Sentence 3: He said I could use it to pay for a fancy vacation. Sentence 4: I got really mad because he told me to be irresponsible. Sentence 5: I hung up the phone on him. Choices: a. Credit Card. b. Fatter.

a