A developer used wsimport to generate the skeleton code for a Web service implementation. What is the purpose of the generated ObjectFactory class？（） 

A.The ObjectFactory class is the generated Service Endpoint Interface class

B.The ObjectFactory class is the generated service provider class that is used by the JAX-WS client.

C.The ObjectFactory class takes the targetNamespace value and creates the directory structure.

D.The ObjectFactory class allows you to programatically construct new instances of the Java representation for XML content.