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: Hannah attended a very challenging and prestigious school. Sentence 2: She was always very nervous about examinations. Sentence 3: She was to take her end of year exams soon. Sentence 4: She had a nervous breakdown. Sentence 5: She was sent to the school infirmary. Choices: a. Worst Vacation Ever. b. Nervous breakdown..

b