A developer is writing a Web service method that needs to accept multiple types of requests. Based on the request’s content, the service performs time-consuming steps, such as verifying the user’s account, checking credit ratings, and building a list of offers. Which two approaches are appropriate to use in this situation? (Choose two.)
A. a synchronous, document-style approach
B. a synchronous, procedure-style approach
C. an asynchronous, document-style approach
D. an asynchronous, procedure-style approach
E. HTTP and HTTPS
F. SMTP or other asynchronous protocol
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