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: Every day Jasper would drink several cups of coffee. Sentence 2: He noticed that he was very nervous and agitated throughout the day. Sentence 3: Jasper's doctor told him to cut down on his caffeine intake. Sentence 4: When Jasper tried to eliminate caffeine, he felt lethargic and blue. Sentence 5: Jasper learned that he functioned best with moderate coffee intake. Choices: a. Too much or too little. b. The Frog.

a