Certkiller.com has servers on the main network that run Windows Server 2008. It also has two domain controllers. Active Directory services are running on a domain controller named CKDC1. You have to perform critical updates of Windows Server 2008 on CKDC1 without rebooting the server. What should you do to perform offline critical updates on CKDC1 without rebooting the server（）
- AStart the Active Directory Domain Services on CKDC1
- BDisconnect from the network and start the Windows update feature
- CStop the Active Directory domain services and install the updates. Start the Active Directorydomain services after installing the updates.
- DStop Active Directory domain services and install updates. Disconnect from the network and then connect again
- ENone of the above