A Windows Communication Foundation (WCF) service handles online order processingyou're your company. You discover that many requests are being made with invalid account numbers. You create a class…

A Windows Communication Foundation (WCF) service handles online order processingyou’re your company. You discover that many requests are being made with invalid account numbers. You create a class named AccountNumberValidator that has a method named Validate. Before the message is processed, you need to validate account numbers with AccountNumberValidator and reject messages with invalid account numbers. You create a new class that implements the IParameterInspector interface. Which code segment should you use in this class?