问题：

[单选] You are developing a client that sends several types of SOAP messages to a Windows Communication Foundation (WCF) service method named PostData. PostData is currently defined as follows:[OperationContract]void PostData(Order data);You need to modify PostData so that it can receive any SOAP message. Which code segment should you use？（）

A . [OperationContract(IsOneWay=true, Action="*", ReplyAction="*")] void PostData(Order data);
B . [OperationContract(IsOneWay=true, Action="*", ReplyAction = "*")] void PostData(BodyWriter data);
C . [OperationContract] void PostData(BodyWriter data);
D . [OperationContract] void PostData(Message data)