He was appointed to the post. Right after hi...

Câu hỏi: He was appointed to the post. Right after his appointment, he fell ill

A. No sooner did he appointed to the post than he fell ill. 

B. No sooner had he appointed to the post than he fell ill. 

C. Hardly had he appointed to the post when he fell ill.

D. Hardly had he been appointed to the post when he fell ill