Which of the following sentence is not true about printmaking? .
a.. there are two main types of printmaking: relief printing and intaglio..
b.. to create a wood engraving, the artist carves a design into the hard side of a block of wood..
c.. the paper and ink used can affect the quality, and the impression left, of the print..
d.. printmaking originated during the 18th century, and was perfected in the 19th century.