What Was NOT Part of the Columbian Exchange

Multiple Choice

What was NOT part of the Columbian exchange?

A) Potatoes from Europe and olive trees from the New World.
B) Horses and cattle from Europe and corn from the New World.
C) Gunpowder from Europe and tobacco from the New World.
D) Smallpox from Europe and gold and silver from the New World.
E) Wheat from Europe and tomatoes from the New World.