51.Which statement is TRUE?
(A) Color printers are more expensive to operate since they use three ink cartridges that need to be replaced after a certain number of pages.
(B) Most expensive printers provide sufficient resolution for most purposes at 600 dpi.
(C) Having more than the minimum amount of memory is helpful and faster.
(D) Users who have a specific need for color and who print a lot of pages will find a black-and-white printer cheaper to operate.