You will be given a definition of a task first, then some input of the task.
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'.

Sentence 1: I went to the mall yesterday to check out some sunglasses. Sentence 2: I could not believe how amazing the sunglasses were. Sentence 3: When I tried some on, I asked for the price. Sentence 4: The saleswoman told me they were one thousand dollars. Sentence 5: I was shocked and immediately went home. Choices: a. Long ferry line. b. Amazing sunglasses.
Output:
b