Given the task definition and input, reply with output. 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: Julie has always wanted to buy herself a car. Sentence 2: When Julie was old enough to work she found a job. Sentence 3: She went to work every day mopping floors. Sentence 4: Julie saved all of the money she earned. Sentence 5: After five years Julie finally bought herself the car of her dreams. Choices: a. fishing. b. Hard work.
b