What should you do next?

You are a newly appointed enterprise administrator at Domain.com. The Domain.com network consists of a single Active Directory domain named Domain.com. All servers on the Domain.com network run Windows Server 2008.
Domain.com contains a server named CERTKILLER-SR17 that has the Active Directory Lightweight Directory Services (AD LDS) role installed. The AD LDS contains three instances. However, you need to uninstall the present Active Directory Lightweight Directory Services (AD LDS) role and install a new role. You then use the ocsetupcommand with the /uninstall switch, but with no avail.
What should you do next?

A.
The best option is to remove the three instances as well as the role by using the Server Manager.

B.
The best option is to reboot CERTKILLER-SR17 to allow the running setup processes to complete and then use the uninstall command.

C.
The best option is to uninstall the three instances and then run the ocsetup /uninstall via the Programs and Features.

D.
The best option is to run the oclist command to confirm the syntax of the option you need to remove and then use the ocsetup command with the correct syntax.

Explanation:
The best option is to remove the three instances before you remove the server from the role.
Incorrect Answers:
A: You need to remove the three instances before removing the role. The Server Manager will not solve the problem.
B: It is very difficult to determine when the setup process is finished because it will answer with a command prompt when the operation is complete. Furthermore, there are no setup processes after a reboot. Thus AD LDS cannot be uninstalled.