—— Do you mind my opening the window? It’s a bit hot in here.
—— , as a matter of fact
A. Go ahead
B. Yes, my pleasure
C. Yes, I do
D. Come on
网友回答
A. Go ahead
B. Yes, my pleasure
(答案→)C. Yes, I do
D. Come on
解析：根据答语中的as a matter of fact “实际上”，可知作者很介意。