Context: It did n't last long , maybe one whole minute , but it was a start . He had n't thrown up in 4 hours . I was timing it . Everything was down to hours and minutes now .
Question: What might be the reason for his situation .
Option 0: He finished a light exercise .
Option 1: None of the above choices .
Option 2: He ate a probiotic .
Option 3: He had gotten the flu .
Answer: 3