You are running a Brocade Vyatta vRouter as a virtual machine, and the upgrade system
image command tells you that you must perform a manual upgrade.
Which three steps are part of the manual upgrade process? (Choose three.)

A.
Copy the new template to your VM hypervisor.

B.
Save the current configuration to an external location.

C.
Enter the add system image command.

D.
Delete the MAC addresses for all interfaces.

E.
Delete the hardware IDs for all interfaces