Which of the following are examples of creating scarcity? ( ) A: Disney FASTPASS Service. B: Limited sale C: VIP service in online games. D: A first-class seat on the plane.

银联卡闪付和异形卡闪付就是用标有“闪付”( )标志的银行卡进行挥卡支付。 A: QuickPay B: FastPass C: QuickPass D: FastPay