To answer this question, let's go through each option to understand why it is correct or incorrect:
Option A) It is a distributed object system - This option is incorrect. SOAP (Simple Object Access Protocol) is not a distributed object system. It is a protocol for exchanging structured information in web services using XML.
Option B) It is an RPC system - This option is correct. SOAP is an RPC (Remote Procedure Call) system. It allows applications running on different operating systems and platforms to communicate with each other by invoking procedures or functions remotely.
Option C) It is even a Web application - This option is incorrect. While SOAP can be used in web applications, it is not inherently a web application itself. It is a protocol for communication between applications over a network.
Option D) None of the above - This option is correct. None of the previous options accurately describe SOAP.
The correct answer is D) None of the above. This option is correct because SOAP is not a distributed object system, it is an RPC system, and it is not a web application itself.