I want to know the depth of the river at this poin...

Câu hỏi: I want to know the depth of the river at this point.

A. I want to know how the river is deep at this point.

B. I want to know how deep is the river at this point.

C. I want to know how deep the river is at this point.

D. I want to know how the deep river is at this point.