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: We were at an Offspring concert without any food or water. Sentence 2: Before the music started, we went to concessions. Sentence 3: To our surprise, the water cost four dollars a bottle. Sentence 4: We didn't want to pay that much, but needed water. Sentence 5: In the end, we decided to get one and refill it in the bathroom. Choices: a. At the Concert. b. The Bank Loan.

a