Your network contains an Active Directory forest named contoso.com. You plan to add a new domain named nwtraders.com to the forest. All DNS servers are domain controllers. You need to ensure that the computers in nwtraders.com can update their Host （A） records on any of the DNS servers in the forest. What should you do（）
- AAdd the computer accounts of all the domain controllers to the DnsAdmins group.
- BAdd the computer accounts of all the domain controllers to the DnsUpdateProxy group.
- CCreate a standard primary zone on a domain controller in the forest root domain.
- DCreate an Active Directory-integrated zone on a domain controller in the forest root domain.