问题：

[单选]

You are the network administrator for ExamSheet and you support the portable computer users. An Account Executive named Hildegard frequently travels to meet with customers and uses her portable computer to demonstrate the company’s new software products. 
Hildegard needs to update these products frequently so customers can evaluate the latest software releases. You need to allow Hildegard to install the product updates while limiting her ability to perform other administrative duties on her portable computer.
What should you do?（）

A . Add Hildegard’s user accounts to the Pre-Windows 2000 Compatible Access  group. 
B . Add Hildegard’s user account to the local Power Users group. 
C . Allow Hildegard’s user account Full Control permission to the Program Files  folder.  Propagate the permissions to all the subdirectories and files in that directory. 
D . Allow Hildegard’s user account Write permissions to the Program Files folder.  Propagate the permissions to all the subdirectories and files in that directory.&e