Which two actions should you perform on the DNS servers?

Your network contains an Active Directory domain. The domain contains DNS servers that run
Windows Server 2008 R2. The network has two external links. One link connects to the Internet. The
other link directly connects to the network of a partner company. The partner companys network is
not connected to the Internet. You need to ensure that users on your network can access resources
on the partner companys network. The solution must ensure that the users on your network can
continue to access resources on the Internet. Which two actions should you perform on the DNS
servers? (Each correct answer presents a complete solution. Choose two.)

A.
Configure conditional forwarding.

B.
Add a stub zone.

C.
Modify the root hints.

D.
Add a reverse lookup zone.

E.
Add a trust anchor.