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: Mary worked at a grocery . Sentence 2: She gave a customer too much change one day. Sentence 3: The customer came back later and returned the change. Sentence 4: Mary was very grateful. Sentence 5: Mary was more careful counting change. Choices: a. Afternoon ice cream. b. Extra Change.

b