Your company has a single Active Directory domain. The domain has servers that run Windows Server 2008. you have a server named NAT1 that functions as a NAT server. You need to ensure that administrators can access a server named RDP1 by using Remote Desktop Protocol （RDP）. What should you do（）

• A、 Configure NAT1 to forward port 389 to RDP1
• B、 Configure NAT1 to forward port 1432 to RDP1
• C、 Configure NAT1 to forward port 3339 to RDP1
• D、 Configure NAT1 to forward port 3389 to RDP1