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: Tina went to the supermarket with her baby. Sentence 2: He kept crying since he was hungry. Sentence 3: Tina became mad and slapped her child. Sentence 4: He continued to cry but was more loud. Sentence 5: Tina didn't care at all and continued to purchase groceries. Choices: a. No sympathy. b. A Busy Lunch Break.

a