Given the task definition and input, reply with output. 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'.

Sentence 1: Jason wanted a new pet. Sentence 2: He decided a ferret would be a great option. Sentence 3: Jason bought all the materials he needed. Sentence 4: The first night home, the ferret ran all over and made lots of noise. Sentence 5: Jason worried that he had made the wrong choice. Choices: a. The Ferret. b. The Corn.
a