Which class should you use?

You are an enterprise application developer. You are developing a distributed application that contains a business object. The client applications must be able to access the business object from another process. The business object implementation must minimize serialization. You need to extend a class to implement the business object.
Which class should you use?

A.
ObjRef

B.
ServicedComponent

C.
MarshalByRefObject

D.
ContextBoundObject