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: The threw up blood. Sentence 2: He went to the doctor. Sentence 3: He was diagnosed with ulcers. Sentence 4: He changed his diet. Sentence 5: The ulcers cleared up. Choices: a. Ulcer. b. Dan's heartbreak.

a