Read the following context and choose the best option to answer the question.
Context: But now he is sleeping and has been sleeping much of the day . This is actually good because all this sleeping might help with his cold . And we get to start him off with solid foods . So tonight we are gon na try cereal and see how well he does .
Question: How did he get sick ?
Options: 
A. None of the above choices .
B. Washing his hands kept the cold virus away from him .
C. He avoided people with a virus .
D. Vitamins kept his immune system in great shape .


A