You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  The application contains the following code segment. Public Class CapabilityEvaluator  Public Shared Function ChkScreenSize（ _  ByVal cap As System.Web.Mobile.MobileCapabilities， _  ByVal arg As String） As Boolean  Dim screenSize As Integer = cap.ScreenCharactersWidth * _  cap.ScreenCharactersHeight  Return screenSize < Integer.Parse（arg）  End Function  End Class  You add the following device filter element to the Web.config file.    You need to write a code segment to verify whether the size of the device display is less than 80 characters.  Which code segment should you use？（）

• A、A
• B、B
• C、C
• D、D