You need to ensure that only the members of the Power Users group and the members of the
Administrators group can view the events in the System log. Which tools should you use?

A.
Wecutil

B.
Event Viewer

C.
Cacls

D.
Wevtutil

Explanation:
http://technet.microsoft.com/en-us/library/cc732848.aspx
http://blogs.technet.com/b/janelewis/archive/2010/04/30/giving-non-administrators-permissionto-read-event-logs-windows-2003-and-windows-2008.aspx