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: Jake loved working on cars. Sentence 2: He got an old one to work on. Sentence 3: He kept upgrading it. Sentence 4: It cost him a lot of money. Sentence 5: Eventually he had his own self made dream car. Choices: a. Car Upgrades. b. Lost Cell Phone.

a