How does Nanni de Banco's The Four Crowned Martyrs (Fig. 20-12) at Orsanmichele demonstrate a revival of classical artistic tradition?

A. The figures are individualized with highly realistic details like Roman portraiture.
B. The figures extend into the space outside of the niche.
C. Their togas reveal the solid mass of the figures' bodies.
D. All of the above.

Answer: D