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.  | English | Chinese | Japan | Korean | - 56 - Test Information Co.， Ltd. All rights reserved. You write the following code fragment.  You write the following code segment to create a custom parameter class. public class DayParameter ： Parameter {  }  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