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: Irene was taller than George by five inches. Sentence 2: She was so proud, she kept making fun of him. Sentence 3: When George grew up, he towered her by four inches. Sentence 4: Irene tried to put on some high heels. Sentence 5: But whatever she did, she never got taller than George again. Choices: a. Fighting for height. b. Afraid of the dark.

a