问题如下：
which of the following statements about Crypto-finance is incorrect?
选项：
A.There is a high failure rate for ICOs.
B.This proliferation of ICOs has been facilitated by the development of cryptoexchanges, which enable investors in the tokens to trade them for other tokens and, eventually, to cash out into fiat currency.
C.Many of the tokens associated with ICOs are traded either over-the-counter and on crypto-exchanges.
D.One of the latest additions to an ever-evolving global financial system, crypto-finance has so far operated largely within existing investor protection frameworks.
解释：
D is correct
选项D错误，正确的表述为：
crypto-finance has so far operated largely outside existing investor protection frameworks.
还可以线下otc交易？这个otc不是通过是否online来判断的，只是相对于大型的exchange center而言。
因为加密货币都是线上走，没有柜台交易吧。
