Which two steps must be taken prior to configuring an external, direct connected Organization Networ

Which two steps must be taken prior to configuring an external, direct connected
Organization Network? (Choose two.)

A.
Create a vSphere port group manually.

B.
Create a network pool in vCloud Director.

C.
Install a vShield Edge device on a vSphere port group.

D.
Create an external network within vCloud Director.