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: It was Dexter's first day at Kindergarten. Sentence 2: He was extremely nervous but excited at the same time. Sentence 3: Luckily, his twin brother was in the same class. Sentence 4: Having his brother there provided much needed confidence for him. Sentence 5: In the end, he really enjoyed his first day. Choices: a. Odometer Fraud. b. First Day.

b