Your network has a single domain with 1，000 client computers that run Windows 7.   You use Microsoft System Center Configuration Manager 2007 to distribute and install software applications.   All users have standard user accounts.   You plan to use Group Policy to ensure that application installation functions properly.    You need to design the User Account Control （UAC） policy. What should you do？（）

A.Configure the User Account Control： Only elevate executables that are signed and validated setting to be Enabled.

B.Configure the User Account Control： Detect application installations and prompt for elevation setting to be Enabled.

C.Configure the User Account Control： Detect application installations and prompt for elevation setting to be Disabled

D.Configure the User Account Control： Behavior of the elevation prompt for standard users setting to be Prompt for credentials.