问题：
[单选题]
You install a custom application on a computer that runs Microsoft Windows XP. The application stores each user’s data in the %programfiles%\app1\data folder on the computer. You install the custom application on a computer that runs Windows Vista.
On the Windows Vista computer, you back up the %programfiles%\app1\data folder and notice that the backup contains no data.
You need to back up the application’s user data on the Windows Vista computer.
What should you do?（）
A、A
B、B
C、C
D、D
参考答案：
D
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