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: Carter always enjoyed birthdays. Sentence 2: He like the cake and presents the most. Sentence 3: One day, he found out that his cake was missing. Sentence 4: He searched for it throughout the house. Sentence 5: Then, he found it in the fridge. Choices: a. Beef. b. Birthday.

b