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'.
Q: Sentence 1: Charles is about to turn 23. Sentence 2: He decides he would like to celebrate. Sentence 3: Charles invites some friends over for a small party. Sentence 4: They eat cake and play board games. Sentence 5: Charles is glad he celebrated his 23rd birthday. Choices: a. Charles Celebrates His Birthday. b. Lost.
A:
a