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: Stu was working on his lawn. Sentence 2: He noticed several large ant hills in his lawn. Sentence 3: Stu went to a lawn and home store. Sentence 4: He found a reputable brand ant killer. Sentence 5: Stu returned home and poisoned the ants. Choices: a. Ant Poison. b. Prank Calls.

a