单选题
Do "margin" in the stock market and "margin" in the futures market, respectively, mean that an investor has received a loan that reduces the amount of his own money required to complete the transaction?
【正确答案】
B
【答案解析】[解析] 股票市场中的保证金交易是指投资者向券商进行借款，以减少自己使用投资资金的金额，并用购买的证券作为抵押品，到期后归还出借人贷款；而期货市场中的保证金是真正的保证，是将现金或者流动性较好的债券作为抵押品，逐日盯市计算盈亏，并结算保证金账户的余额。