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: Mike was a successful businessman. Sentence 2: He wanted to help poor kids. Sentence 3: Saw he found a poor kid. Sentence 4: He proceeded to train the child. Sentence 5: The child become fairly successful later on. Choices: a. Mailbox Jump. b. To change his world.
b