A Windows Communication Foundation (WCF) service is responsible for transmitting XML documents between systems. The service has the following requirements: It must minimize the transmission size by attaching the XML document as is without using escape characters or base64 encoding. It must interoperate with systems that use SOAP but are not built on the .NET plafform. You need to configure the service to support these requirements. Which message encoding should you use?（）

• A、Binary message encoding
• B、MTOM (Message Transmission Optimization Mechanism) message encoding
• C、Text message encoding with message version set to none
• D、Text message encoding with message version set to SOAP 1.2