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: Tim ordered Chinese food. Sentence 2: That same night he felt sick to his stomach. Sentence 3: He threw up and had diarrhea. Sentence 4: The next day he got checked up. Sentence 5: A doctor told him he had minor food poisoning. Choices: a. Food Poisoning. b. Falling at the rink.
a