Had he known more about the information technology...

Câu hỏi: Had he known more about the information technology, he would have invested in some computer companies.

A. Not knowing about the information technology help him invest in some computer company.

B. He didn't know much about the information technology and he didn't invest in any computer companies.

C. Knowing about the information technology, he would have invested in some computer companies.

D. He would have invested in some computer companies without his knowledge of the information technology.