Which of the following is NOT a technique used by Martin Schongauer to create tonal varieties and textures in his engraving of Saint Anthony?

A) Created lines of varying thickness and density
B) Employed cross-hatching to describe forms
C) Incised lines into a copper plate with a burin
D) Drew lines through an acid-resistant coating

Tonal Varieties

The range of colors and shades in art or photography, contributing to the depth, mood, and realism of the work.

Cross-Hatching

An artistic technique using closely spaced intersecting lines to create shading, texture, or tonal effect.

Incised Lines

Lines cut into a surface with a sharp instrument, used as a decorative technique in various art forms.