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: David's mother's birthday was coming up. Sentence 2: Glenn had forgotten about this until the day before it. Sentence 3: When he remembered he ran out in a panic to buy a gift. Sentence 4: He managed to buy a book just before the bookstore closed. Sentence 5: His mother loved the book when he gave it to her the next day. Choices: a. Birthday Gift. b. Merry Go Round.

a