You create a Microsoft Windows

单项选择题 You create a Microsoft Windows Installer file for a Windows Presentation Foundation (WPF) application that requires Microsoft .NET Framework 4. You need to ensure that the installation starts only if .NET Framework 4 is already installed on the computer. What should you do?（）: A、 Use a custom action.; B、 Set the MinVersion property to .NET Framework 4.; C、 Set the Version property of Windows Installer to .NET Framework 4.; D、 Set the Version property of the Launch Condition to .NET Framework 4.

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