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: Elena wanted to lose weight. Sentence 2: But she didn't want to change her eating habits. Sentence 3: Nor did she want to exercise. Sentence 4: So instead she decided to throw up her food after each time she ate. Sentence 5: Unfortunately, she has developed an eating disorder called bulimia. Choices: a. Eating Disorder. b. Facebook isn't for everyone.

a