A support specialist started to apply an APAR on a system by inserting the tape into the tape drive, and loaded the fix using smitty installp. The following error message is displayed:
	tape not in backup format  
	Which of the following will resolve this problem?()
	A.Change density setting to 2
	B.Set tape device to /dev/rmt0
	C.Set block size to 0 for variable
	D.Enable compression on tape device
 
                            