单项选择题

A.apply the display filter !DNS and save the displayed frames as DNSdata.cap file
B.Apply the capture filter DNS and save the displayed frames as a DNSdata.cap file
C.Add a new alisa named DNS to the aliases table and save the file as DNSdata.cap
D.Run the nmcap.exe /inputcapture data.cap /capture DNS /file DNSdata.cap command.