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: Ethan went to the bathroom. Sentence 2: He couldn't go because he was constipated. Sentence 3: He took a laxative. Sentence 4: Then he could go. Sentence 5: He was happy on this extra special Christmas. Choices: a. Christmas. b. Needing to numb the pain.

a