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: Gary bought some grid paper for work. Sentence 2: He had to make charts of the financial transactions of his company. Sentence 3: He spent two hours coming up with many charts. Sentence 4: The boss looked at his charts and was impressed. Sentence 5: He was promoted for his great work. Choices: a. Lemon. b. Gary's Grid Paper.

b