Given the task definition and input, reply with output. 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'.

Sentence 1: Yesterday I accidentally bought the wrong size of jeans. Sentence 2: I had to make a return at the store. Sentence 3: I found the item and the receipt for purchase. Sentence 4: Then I drove to the store with both items. Sentence 5: Finally I returned the item and got my money back. Choices: a. flowers. b. Returning an Item at the Store..
b