A. It differs from a forward contract, in which the parties are obligated to execute the transaction on the maturity date

B. It differs from a futures contract, in which the parties are obligated to transact at maturity,or liquidate the position before the maturity or delivery date

C. The option writer, is exposed to unbound risk

D. European style options should be exercised only on the expiration date

E. The option premium is the money paid by the writer to the buyer to compensate the potential loss