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: The hole was round and smooth. Sentence 2: Closer looks provided more insight. Sentence 3: The hole was chiseled. Sentence 4: The plastic had grooves. Sentence 5: There were tiny plastic strands. Choices: a. Hole. b. Christmas Morning.
a