What Is the Main Difference Between a Portal Approach and a Proprietary

Multiple Choice

What is the main difference between a portal approach and a proprietary course management system (CMS) approach in distance education?

A) Portal-based systems can only be accessed by faculty of an institution, and proprietary CMS systems can be accessed by students and faculty.
B) Portal-based systems can be accessed by students and faculty of an institution, and proprietary CMS systems can only be accessed by faculty.
C) Portal-based systems are products purchased or licensed by a vendor, and proprietary CMS systems are developed and customized by the learning institution.
D) Portal-based systems are developed and customized by the learning institution, and proprietary CMS systems are products purchased or licensed by a vendor.