The correct answer is D. all of the mentioned.
RMI, Hessian, and Burlap are all service exporters that can export a bean as a remote service.
RMI (Remote Method Invocation) is a Java-based technology that allows objects to be invoked remotely. It is a standard way for Java objects to communicate with each other over a network.
Hessian is a binary serialization protocol that is used to transmit Java objects over a network. It is a lightweight protocol that is designed for high performance.
Burlap is a RESTful web service framework that is used to create and consume web services. It is based on the JAX-RS API and provides a number of features that make it easy to develop and deploy web services.
All three of these technologies can be used to export a bean as a remote service. The choice of which technology to use depends on the specific requirements of the application.
RMI is a good choice for applications that need to be highly reliable and secure. Hessian is a good choice for applications that need to be high performance. Burlap is a good choice for applications that need to be RESTful.