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: Mark was neck-deep in college loans. Sentence 2: One day his university called him for alumni donations. Sentence 3: Because of his already looming loans, Mark fumed at the request. Sentence 4: He spent half an hour scolding the university employee. Sentence 5: He soon regretted it and donated anyway. Choices: a. fence. b. Loans.

b