You are developing an ASP.NET Web service. The following code segment implements the service. You need to ensure that both GetProduct methods can be called from a Web client. Which two actions should you perform？（）

• A、Remove line 01.
• B、Add the static modifier on lines 05 and 11.
• C、Add the following attribute before line 10. [SoapDocumentMethod（Action="GetProductById"）]
• D、Modify the attribute on line 10 as follows. [WebMethod（MessageName="GetProductById"）]