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: Tim's vision was worse than his peers. Sentence 2: He decided to do vision exercises. Sentence 3: He did them regularly. Sentence 4: He began to see his vision improve. Sentence 5: His vision was soon equal to his peers. Choices: a. Interview. b. Eyes.

b