Which of the following describes how Martin Schongauer achieved darker lines in metal engravings? a. He applied more ink to the
engravings. B. He engraved deeper lines into the metal. C. He used different engraving tools for darker lines. Please select the best answer from the choices provided A B C.
Sketchpad was the world's first CAD software but the first commercial CAM software system, a numerical control programming tool named PRONTO, had already been developed in 1957 by Dr. Patrick J. Hanratty.
