You are designing an ASP.NET MVC 2 Web application. A page of the Web application will
display data retrieved from a Web service. The Web service performance is unpredictable.
You have the following requirements: • Display a progress indicator while retrieving data. •
Display data in the same page from which it is retrieved. You need to recommend a solution
that meets the requirements. What are two possible solutions you could recommend? (Each
answer presents a complete solution. Choose two.)

A.
Use the Ajax.BeginForm() method.

B.
Use the jQuery.ajax() function.

C.
Derive the controller from the AsyncController class.

D.
In the view, set the Page directive Async attribute to true.