Triangle Arbitrage: I

Triangle arbitrage: I. is a profitable situation involving three separate currency exchange transactions.
II) helps keep the currency market in equilibrium.
III) opportunities can exist in either the spot or the forward market.
IV) only involves currencies other than the U.S. dollar.

A) I and IV only
B) II and III only
C) I, II, and III only
D) II, III, and IV only
E) I, II, III, and IV