An enterprise has a requirement to create a Web service to accept purchase orders. The order data contains some authorization information that is specific to each order (such as, who can access which parts of the order).Keeping in mind future enhancements in types of orders that the enterprise needs to accept, which two design solutions provide the most flexibility? (Choose two.)
A. a Web service interface with one method per accepted XML document type for a purchase order
B. a procedure-style Web service method that lists all data elements and all possible access control options
C. a document-style Web service method that accepts all types of XML documents representing purchase orders.
D. a Web service interface with one method for each combination of data elements and the access control options
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