问题如下：
The list of securities that a particular ETF wants to own, which is disclosed daily by all ETFs, is referred to as the:
选项：
A.creation unit.
creation basket.
redemption basket
解释：
B is correct. Each day, ETF managers publicly disclose a list of securities that they want to own, which is referred to as the creation basket. This basket also serves as the portfolio for determining the intrinsic net asset value (NAV) of the ETF on the basis of prices during the trading day
老师, C选项 redemption basket 存在么？ 就是ETF 经理现在track 指数的手上有的stocks， 要是AP来换ETFshares，就给这个Updated basket of securities called redemption basket ?
还是redemp的过程的那个basket 也叫 creation basket ？
