A Particularly Distinctive Feature of Robert Campin's Mérode Altarpiece Is

A particularly distinctive feature of Robert Campin's Mérode Altarpiece is the

A) use of symbols to emphasize the Christian nature of the scene.
B) setting of the Annunciation in an ordinary,middle-class Flemish home.
C) inclusion of the patrons and their family's coat-of-arms.
D) juxtaposition of scenes from the Annunciation and the Crucifixion.