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: Sandra drank a lot of water. Sentence 2: Her parents told her to use the restroom before the road trip. Sentence 3: She didn't listen. Sentence 4: An hour into the drive, Sandra had to go really bad. Sentence 5: When the car reached a gas station, she rushed to the restroom. Choices: a. Bathroom. b. Fun Run.

a