A Client Has Asked an Instructor to Modify Information for a Course

A client has asked an instructor to modify information for a course to give the learners the knowledge needed for their company's proprietary system. The instructor discovers that the material cannot be modified due to copyright regulations. Which of the following is the BEST course of action for the instructor?

A) Modify the material anyway for the client and do not tell them about the regulations.
B) Call the developer to see what the charge would be to change the material.
C) Advise the client of the copyright regulations and offer to use different material.
D) Tell the client class cannot be conducted because of the copyright regulations.