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: Sally was a serious shopper and always has coupons. Sentence 2: Once, when she was about to check out, she was missing her coupons. Sentence 3: She was at a store she visited every week, and the manager knew her. Sentence 4: Since Sally had always been nice, the manager gave her a discount. Sentence 5: Sally was so appreciative that she then shopped there twice as much. Choices: a. The Good Shopper. b. Refreshment.

a