You are creating a Windows Communication Foundation (WCF) service that implements the following service contract.[ServiceContract]public interface IOrderProcessing { [OperationContract] void ApproveOrder(int id);}You need to ensure that only users with the Manager role can call the ApproveOrder method. What should you do?（）

• A、In the method body, check the Rights PosessesProperty property to see if it contains Manager
• B、Add a PrincipalPermission attribute to the method and set the Roles property to Manager
• C、Add a SecurityPermission attribute to the method and set the SecurityAction to Demand
• D、In the method body, create a new instance of WindowsClaimSet. Use the FindClaims method to locate a claimType named Role with a right named Manager