Well, The answer would be zxnisdnkfnxkzl since ndlsfd;gjfsdd is a forsfgfd operation. Also, the ffsldflslc is like the dfgfd. Keep that in mind when you are studying the ffsldflslc. It could be tough on the test.
It would either be A. Audio card or D. Sound card but most likely A
Wipe off the hard drive with a software eraser but it won't be quick and won't work on defective disks