问题详情

It can be inferred from the first paragraph that______.

A．up to now, Richard didn"t know he had caught certain disease

B．Richard"s illness offered him a chance to think about his life

C．but for his illness, Richard would not have stopped working

D．there was something wrong with both Richard"s mental and physical health

请帮忙给出正确答案和分析，谢谢！