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'.
Q: Sentence 1: Today I start my new job in telephone customer service. Sentence 2: Before my shift started my coworker asked what name i would use. Sentence 3: It never occurred to me to pick out an alias. Sentence 4: What would I use Amber, no to common, Bambi, No to ditsy. Sentence 5: Ava, its short and ecotic enough to be interesting. Choices: a. Alias. b. Airplanes.
A:
a