Which three actions must be performed before beginning the installation?

Your manager has tasked you with planning an Oracle Grid Infrastructure 12cR1 installation. Which
three actions must be performed before beginning the installation?

A.
All nodes are configured with the same operating system and version.

B.
Network interfaces are configured for public and private traffic.

C.
A valid voting disk file is available on at least one node.

D.
Shared storage is available from all servers.

E.
Each public network interface has its own subnet.