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: Roland weighed 300 pounds. Sentence 2: Everyone was worried for his health. Sentence 3: So Roland told everyone he would lose the weight. Sentence 4: No one believed him. Sentence 5: He lost 100 pounds in 6 months to everyone's surprise. Choices: a. Sell and Run. b. He perseveres.

b