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: Jim found the best pair of cowboy boots. Sentence 2: He already had two pairs. Sentence 3: He decided to save up to buy them. Sentence 4: He finally had enough. Sentence 5: When he went to buy them, they were gone. Choices: a. Cowboy Boots. b. Jack's Christmas.
A:
a