which two points must be considered?

When creating a new Managed Server using the administration console, which two points must be
considered?

A.
The Server Name must be unique within the domain.

B.
After you assign a Listen Port value for the server, you cannot change it

C.
The Listen Port value must be unique for ever server.

D.
The Server Name cannot be changed after you have created the server.

Explanation:
A: Each server instance in your WebLogic environment must have a unique name,
regardless of the domain or cluster in which it resides, or whether it is an Administration Server or
a Managed Server. Within a domain, each server, machine, cluster, virtual host, and any other
resource type must be named uniquely and must not use the same name as the domain.
D: The server name cannot be changed.