Which approach should you recommend?

You need to design the application to support the RSS news feeds.
Which approach should you recommend?

A.
Use the FileResult class and return the result as a plain text file.

B.
Use the ViewResult class and bind the items to an HTML.TextArea HTML Helper.

C.
Use a custom ActionResult class and return the output stream as the return value.

D.
Use a custom ActionResult class and bind the items to an HTML.TextArea HTML Helper.