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: Mark made a grilled cheese sandwich while Ben, his dog, watched. Sentence 2: Knowing that Ben wanted a bite, Mark pretended to give it to Ben . Sentence 3: Barely missing it each time, Ben, frustrated, jump at Mark's face. Sentence 4: Because Ben startled him, Mark dropped the sandwich onto the floor. Sentence 5: Ben happily ate the sandwich as Mark watched. Choices: a. Don't tease me. b. New shirt.

a