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: Joey was not tall enough to ride the big roller coaster last year. Sentence 2: He knew he grew over the winter, but was it enough? Sentence 3: He stood up as tall as he could at the height stick. Sentence 4: He made it at last. Sentence 5: He could finally ride the big roller coaster with his brother! Choices: a. New shoes. b. Finally Tall Enough.

b