D 选项是什么意思？

问题如下：

A highly liquid market tends to result from situations where:

选项：

A.

stop loss rules take effect as prices decline.

B.

negative feedback traders sell shares as prices rise.

C.

positive feedback traders purchase shares as prices rise.

D.

breakout trading occurs because of prices moving outside of a range.

解释：

负反馈交易者会在股价上升时卖出股票，这有助于增加市场的流动性和价格稳定性。而止损规则在股价下跌时只会加剧跌势，从而减少市场流动性。另一方面，正反馈交易者会在股价上涨时买入更多股票，以及突破交易策略——即利用股价突破既定范围的趋势进行交易——这些都会导致流动性降低。