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: Sam planned on throwing a party for her son. Sentence 2: Sam decided to make her own cake for the party. Sentence 3: She invited fifteen people to the party. Sentence 4: Sam did not think there would be enough cake for fifteen people. Sentence 5: Sam made two dozen cupcakes instead. Choices: a. Cake Wars. b. Roller Skating.

a