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- 单项选择题 You are creating a Windows Forms application by using the .NET Framework 3.5. The application is configured to use rolebased security.You need to ensure that users can print reports only by selecting a printer from the printer dialog box. You want to achieve this goal by using the minimum level of permission. Which code segment should you use？（）
A、A
B、B
C、C
D、D
- D
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