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.