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: Vivian and Aunt Hilda are getting ready to go to the grocery. Sentence 2: When they were almost ready, Aunt Hilda suddenly stopped. Sentence 3: She started running around the house, looking for the keys, Sentence 4: She looked in her hands, and there were there. Sentence 5: Vivian couldn't stop laughing for Aunt Hilda looked embarrassed. Choices: a. Adam's Adventure. b. my mother.

b