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: Derrick loved funny cat pictures. Sentence 2: His coworkers did not. Sentence 3: Derrick always sent out a huge email on Fridays with lots of pictures. Sentence 4: His coworkers had asked him to stop but he didn't listen. Sentence 5: Derrick was fired one day because he sent it to his boss by mistake. Choices: a. Overcoming sadness. b. Viral.

b