I'd have to go with A. The rhino picture. The image is composed of what looks like notches or "gouges" used by a sharp tool, which removes certain areas by gouging them out with the tool and then leaving the actual print on the top of the surface. Often, a sort of paint roller would be passed over the surface image. The gouged out portions would not be pressed by the roller. Very cool and were used in many printing presses when they used templates.
A mallet is used to strike percussion instruments. I know this because I used to be in band :)
Lithography is a technique invented in 1798 by Alois Senefelder and based on the chemical repulsion of oil and water. A porous surface, normally limestone, is used; the image is drawn on the limestone<span> with a greasy medium.</span>
