单选题A developer is designing a multi-tier application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition， the application needs to find， in a transparent manner， the heterogeneous business components used to service the client’s requests. Which design patterns， working together， address these issues？（）A Business Delegate and Transfer ObjectB Business Delegate and Service LocatorC Front Controller and Business DelegateD Intercepting Filter and Transfer ObjectE Model-View-Controller and Intercepting Filter
单选题
A developer is designing a multi-tier application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition， the application needs to find， in a transparent manner， the heterogeneous business components used to service the client’s requests. Which design patterns， working together， address these issues？（）
A
Business Delegate and Transfer Object
B
Business Delegate and Service Locator
C
Front Controller and Business Delegate
D
Intercepting Filter and Transfer Object
E
Model-View-Controller and Intercepting Filter
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