Which of the Following Are the Three Major Types of Knowledge

Which of the following are the three major types of knowledge management systems?

A) management information systems,decision support systems,and transaction processing systems
B) enterprise systems,customer support systems,and supply chain management systems
C) database management systems,expert systems,and knowledge work systems
D) enterprise-wide knowledge management systems,knowledge work systems,and intelligent techniques
E) KMS,LMS,and KWS