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: Scotty had very greasy hair. Sentence 2: He used a lot of product. Sentence 3: We called him Crisco head because of it. Sentence 4: It never seemed to hurt his feelings. Sentence 5: One day he said it did. Choices: a. Caffeine. b. Scotty.

b