单选题A developer is designing a multi-tier web application and discovers a need to hide the details of establishingand maintaining remote communications from the client. In addition， because the business and resourcetiers are distributed， the application needs to minimize the inter-tier network traffic related to servicing clientrequests. Which design patterns， working together， address these issues？（）AFront Controller and Transfer ObjectBFront Controller and Service LocatorCBusiness Delegate and Transfer ObjectDBusiness Delegate and Intercepting Filter
单选题
A developer is designing a multi-tier web application and discovers a need to hide the details of establishingand maintaining remote communications from the client. In addition， because the business and resourcetiers are distributed， the application needs to minimize the inter-tier network traffic related to servicing clientrequests. Which design patterns， working together， address these issues？（）
A
Front Controller and Transfer Object
B
Front Controller and Service Locator
C
Business Delegate and Transfer Object
D
Business Delegate and Intercepting Filter
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