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: Rebecca hates Chemistry. Sentence 2: She would do anything to avoid this class. Sentence 3: She deliberately hit her head today. Sentence 4: Teacher sent her to see a doctor. Sentence 5: The doctor said it was not too serious. Choices: a. Beach day.. b. Chemistry class.
Output:
b