Instructions: 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: I had to get a TB test. Sentence 2: It was to make sure you don't have the disease. Sentence 3: They give you a shot. Sentence 4: If your arm does not react, you don't have it. Sentence 5: I did not have it. Choices: a. Tuberculosis. b. Water.
Output:
a