单项选择题

A. Install a domain controller that runs Windows Server 2012 R2, Run the New- ADService Accountcmdlet, Modify the settings of AppPool1.
B. Configure the Security settings of the contoso.com zone.
C. Add a second legacy network adapter, and then run the Set-VMNetwork Adoptercmdlet.
D. From Windows Powershell, run Get-DNS ServerDiagnostics.