You have a Microsoft Office SharePoint Server 2007 Service Pack 2 (SP2) server farm. You upgrade the server farm to SharePoint Server 2010 Server Pack 1 (SP1). You open a SharePoint site and discover that you cannot select the Visual Upgrade option. You need to ensure that you can perform a visual upgrade of the SharePoint site.
What should you do?
A. Run stsadm.exe and specify the preupgradecheck operation
B. Run the upgrade-spcontentdatabase cmdlet.
C. Run psconfig.exe and specify the -cmd parameter.
D. Run stsadm.exe and specify the setproperty operation.
