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: Last month I spent a lot of money on my card. Sentence 2: I got to cash in some rewards too. Sentence 3: I ended up buying a hotel room with my rewards. Sentence 4: It was the best vacation. Sentence 5: I could not wait to spend more. Choices: a. Bonus rewards. b. Sunburn.

a