Which one of the following statements is the best description of a commodity swap?

A) A portfolio of forward contracts obligating the fixed price payer to buy the commodity at the settlement (reset) dates, at the swap price

B) An agreement to buy or sell a commodity at the spot price that prevails in the future

C) A portfolio of options allowing the fixed price payer to buy the commodity at the settlement (reset) dates, at the swap price

D) All of the above