The old man is working in this factory. I bo...

Câu hỏi: The old man is working in this factory. I borrowed his bicycle yesterday.

A.  The old man whose bicycle I borrowed yesterday is working in this factory. 

B. The old man whom bicycle I borrowed yesterday is working in this factory. 

C. The old man whom is working in this factory I borrowed his bicycle yesterday. 

D. The old man is working in this factory which I borrowed his bicycle yesterday.