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: I was sitting on the bench last week. Sentence 2: A woman was on the bench, waiting for her child. Sentence 3: She became distraught when the bus did not come on time. Sentence 4: She frantically called the school for an update. Sentence 5: The bus arrived a half an hour late, and she was relieved. Choices: a. Late Bus. b. Dun De Dun Dum Dee.

a