You issued the RMAN>SHOW ALL; command. The output of the command is as follows:<br /> <img src="https://nimg.ppkao.com/2018-08/xiashuhui/2018080116014456210.jpg?sign=3eb71b17cc1fc163852493ece4b3e51f&t=62d357ca" /><br />    <br /> After analyzing this output, what conclusion can you draw? ()
A、 If you perform a backup across a network, then the backup will reduce the bandwidth.
B、 If you perform a backup of a datafile, then the backup will be the same as the operating system copy of the datafile.
C、 If you perform a backup of a single datafile, then the control file will not be backed up.
D、 The maximum size of each backup set is 10MB
E、 The backups will be performed on the disk.