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: Susie was over her grandparents house. Sentence 2: All of the sudden she heard a loud bang. Sentence 3: She also heard her grandmother scream so she went to see. Sentence 4: Her grandmother had fallen on the tile. Sentence 5: Frantic, Susie called 911 immediately. Choices: a. Car accident. b. Fallen and can't get up.

b