You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You plan to add a custom parameter in the SqlDataSource control. You write the following code fragment. You write the following code segment to create a custom parameter class. Public Class DayParameter  Inherits Parameter  End Class  You need to ensure that the custom parameter returns the current date and time. Which code segment should you add to the DayParameter class？（）

• A、A
• B、B
• C、C
• D、D