Which Figure Does NOT Exemplify the Exacting Naturalism That Characterizes

Which figure does NOT exemplify the exacting naturalism that characterizes Flemish portraiture of the fifteenth century?

A) the woman in Jan van Eyck's Double Portrait of A Giovanni Arnolfini and His Wife
B) the figure in Jan van Eyck's Man in a Red Turban
C) the Virgin in Dieric Bouts's Virgin and Child
D) the donor in the Mérode Altarpiece by the Master of Flémalle