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: Tom worked for a factory. Sentence 2: He started getting sick after a while. Sentence 3: Tom went to a doctor. Sentence 4: The doctor told him it was due to chemicals at the factory. Sentence 5: Tom couldn't afford to quit, though. Choices: a. Good Deed. b. Sick at Work.

b