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: Allie tried to reach her mom. Sentence 2: But then she realized something. Sentence 3: Her phone was no longer working. Sentence 4: Allie freaked out. Sentence 5: She then had to find a pay phone. Choices: a. Phone not working. b. The Graduation Trip.

a