Which statement is true about clustered Data ONTAP 8.2 node based licensing?

Which statement is true about clustered Data ONTAP 8.2 node based licensing?
A . When replacing a controller for a RMA, a new key is needed but the existing key will work for 90 days.
B . A new clustered Data ONTAP 8.2 installation can use both 8.1 keys and 7-Mode keys.
C . When replacing a controller for a RMA the key is automatically updated to the serial number of new controller.
D . Replacing a NVRAM card in a controller will NOT require new license keys for that mode.

Answer: A