Which two actions are prerequisites for upgrading VMware Cloud Foundation 4 x? (Choose two.)

Which two actions are prerequisites for upgrading VMware Cloud Foundation 4 x? (Choose two.)
A . Validate that all required bundles for the upgrade are downloaded successfully.
B . Acquire a temp IP range for the new products components deployed during the upgrade
C . Take a backup of SDDC Manager
D . Take a snapshot of all workloads running on VMware Cloud foundation
E . Validate that all required license keys are available for the newer products versions

Answer: A,B