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 .
According to the above context, choose the best option to answer the following question.
Question: What might be the reason for his situation .
Options:
A. He finished a light exercise .
B. None of the above choices .
C. He ate a probiotic .
D. He had gotten the flu .


D