Silverpoint is _____________ a. A technique using the blackish residue of impure carbon obtained by removing water from animal and vegetation substances. B. A technique involving the use of a metal point, and a thin silver wire, popular in the 14th and 15th Centuries. C. A printmaking technique born from crayon manner that imitates the appearance of chalk lines. D. A technique used since the 16th century involving a stick filled with either colored or black graphite, a heated mixture of carbon and clay. Please select the best answer from the choices provided A B C D.