You are creating an XML Web service named YourWebService. Callers must be authenticated by using credentials passed in the SOAP header of each Web service call. You want to use role-based security to secure each method on YourWebService. The roles that users are assigned are stored in a custom database table.You need to write code that will allow you to dynamically change which roles can execute specific methods at run time.What should you do?

A.Create a Windowsldenti ty object and a Windows Principal Object. Then implement declarative role-based security

B.Create a Windowsldenti ty object and a Windows Principal object. Then implement imperative role-based security

C.Create a Gene riel dentity object and a GenericPrincipal object. Then implement declarative role-based security

D.Create a Genericldentity object and a GenericPrincipal object. Then implement imperative role-based security