What two prerequisites actions must a user perform to create Virtual Database (VDC) in Oracle Enterprise Manager Ops Center?

What two prerequisites actions must a user perform to create Virtual Database (VDC) in Oracle
Enterprise Manager Ops Center?

A.
Associate a network domain with Server Pools

B.
Associate a public cNet with Server Pools.

C.
Create one or more Server Pools.

D.
Create one or more accounts.

E.
Create one or more vServer types.

Explanation:
The following procedures describe the steps to create a vDC:
*Discover Oracle VM Server for x86
*Set up the Network
* (C)Set up the Server Pool
*Set up the Storage
*Create a Virtual Datacenter
* (D)Create an Account
*Create and Assign Cloud User to Accounts
*Cloud User View and Actions
D:To deploy Infrastructure-as-a-Service (IaaS) cloud platform service, Oracle Enterprise
Manager Ops Center provides the vDC Management feature. You must have the
Cloud Administrator role to set up the infrastructure and create virtual datacenters in
your enterprise. The physical resources allocated to a vDC are entitled to accounts as
virtual resources under quotas set by the cloud administrator. Accounts provide the
required capabilities to manage the allocated resources. For each vDC, create accounts
that serve as a container for virtual resources. The allocated resources of vDC are
entitled to accounts, and the accounts are in turn entitled to cloud users. A cloud user
uses the allocated resources to deploy, and manage the applications.
Reference:Oracle Enterprise Manager Ops Center,Configuring a Virtual Datacenter