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: Tom needed some extra money. Sentence 2: He decided to throw a keg party. Sentence 3: He got beer and charged for cups. Sentence 4: Tom kept track of every payment. Sentence 5: He was able to make some decent cash. Choices: a. Keg Party. b. Stranger at the Door.
A:
a