Mr Khoat is a farmer. I bought his house.

Câu hỏi: Mr Khoat is a farmer. I bought his house.

A Mr Khoat, who is a farmer, bought his house.

B Mr Khoat, whom I bought his house, is a farmer.

C Mr Khoat, whose house I bought, is a farmer.

D Mr Khoat, who is a farmer, whose house I bought.