Which of the following statements correctly expresses the legal aspects of using illustrations in your publications? a. you can't use a graphic image without printing a credit line. b. software companies that manufacture clip-art disks usually require that you pay a fee each time you use a graphic image in a publication. c. you can't use a copyrighted graphic image without permission from its owner. d. software companies that manufacture clip-art disks usually require that you print a credit line each time you use a graphic image in a publication.