A call is option that gives the buyer the right, but not the obligation, to purchase the underlying futurescontract at the strike price on or before the expiration date.
看涨期权赋予买方以权利,但不必负有义务,在期权到期日当天或到期之前,按敲定价格买进相关期货合约。
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A put is an option that gives the buyer the right, but not the obligation, to sell the underlying futurescontract at the strike price on or before the expiration date.