I left the office. There was a power cut just then...

Câu hỏi: I left the office. There was a power cut just then.

A. I left the office after there was a power cut.

B. Hardly I had left the office when there was a power cut.

C. No sooner had I left the office than there was a power cut.

D. I left the office long before there was a power cut.