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'.

Sentence 1: Justin didn't like his math teacher. Sentence 2: He wrote nasty things about her on the school's bathroom wall. Sentence 3: One of his schoolmates saw Justin writing on the wall. Sentence 4: Justin was reported to the principal. Sentence 5: Justin received a week's worth of detention. Choices: a. Justin's Bad Deed. b. Hypertension.
a