You create a Web Form that contains connected Web Parts. You write the following declaration in your Web Form.You need to ensure that your Web Part connection is valid. Which two actions should you perform? （）

• A、Include a data source identified as "WebPartConnection1" on the Web Form.
• B、Include a Web Part identified as "customerPart" on the Web Form.
• C、Include a Web Part identified as "ordersPart" on the Web Form.
• D、Ensure that you declare an interface named "IOrdersPart".
• E、Ensure that you declare an interface named "ICustomerPart".
• F、Ensure that each Web Part declares either a GetInterface or ProvideInterface method.