【单选题】
You are creating a Windows Communication Foundation （WCF） service that implements the following service contract. <servicecontract（）> Public Interface IOrderProcessing <operationcontract（）> Sub ApproveOrder（ByVal id As Integer）For interactive and self-paced preparation of exam 70-513， try our practice exams. Practice exams also include self assessment and reporting features!End Interface You need to ensure that only users with the Manager role can call the ApproveOrder method. What should you do？（） </operationcontract（）></servicecontract（）
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.
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