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: Kay needed a new phone, as her phone would not turn on anymore. Sentence 2: She went on Amazon and researched Samsung phones. Sentence 3: She went to several stores and spoke with salespersons about phones. Sentence 4: Kay decided to purchase a Samsung Note 7. Sentence 5: She was very pleased with the new phone. Choices: a. Kay's New Phone. b. Christmas Caroling.

a