Which of the following implies that ownership has been taken? Buying a futures contract Buying a stock Selling a futures contract Shorting a stock Which is not a power given to a futures exchange? To set minimum initial margin requirements O To fix the settlement price O To take the opposite side of a short position to facilitate delivery at maturity when a long is not available To set limit moves on a futures contract so it cannot trade at prices outside those limits All these are powers given to a futures exchange o