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: Tom had fair skin. Sentence 2: Tom needed to purchase sunscreen. Sentence 3: Tom did not like the unnatural ingredients in most sunscreens. Sentence 4: Tom decided to purchase coconut oil. Sentence 5: Tom used coconut oil to protect his skin from the sun. Choices: a. A Sad Man. b. Sunscreen.

b