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: The Clarke family had six kids. Sentence 2: They drove to the park to have a picnic. Sentence 3: The mother handed everyone a lunch. Sentence 4: She had one extra lunch in her hand. Sentence 5: She realized they had left one of kids at home. Choices: a. The Extra Lunch. b. Double Duty.

a