Although Bronze Was the Favored Material for Freestanding Sculpture in Greece

Although bronze was the favored material for freestanding sculpture in Greece, most bronze statues have not survived because:

A) they have corroded entirely away.
B) they were destroyed by Christian iconoclasts.
C) they were melted down to make weapons and other objects.
D) the Romans destroyed them when making marble copies.
E) they were lost at sea.