You are developing a WCF service that compares several data sources. The service takes a long time to complete. The service must meet the following requirements:
· The client must be able to continue processing while the service is running.
· The service must initiate communication with the client application when processing is complete.
You need to choose a message pattern to meet the requirements. Which message pattern should you choose?
A. One Way
B. Streaming
C. Duplex
D. Request/Reply
