Q: 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'.
Sentence 1: I met Mike when I was only 5 years old. Sentence 2: I am now 40 years old. Sentence 3: He is also 40 years old. Sentence 4: I was looking at my friends list on facebook and realized something. Sentence 5: Mike is my longest friend I've ever had! Choices: a. Longest friend. b. 112 degrees.
A:
a