可以介绍一下这道题涉及的几个知识点吗？

NO.PZ2023041102000022 问题如下 Thiboaux notes thwhile funmental-basemols are useful in explaining longer-term tren in exchange rates, they are of limitevalue when it comes to explaining short-tren. He explains:“Technicanalysis, well orr flow, sentiment, anpositioning incators have been more successful for short-term exchange rate forecasting,”The scussion of short-exchange rate forecasting continues with the following comments:Beauregar“Technicanalysis is not likely to benefit our emerging market tras because the currencies are thinly tra”Thiboaux:“Utilizing trenfollowing in our carry tra strategy shoulproteus from experiencing losses in a market unwin”Beauregar“Monitoring market sentiment following the trenin risk reversals shoulenable us to preanconfirm currenrate movements on our tras.”Whiof the comments about short-term exchange rate forecasting is the most accurate? The comment by: A.Beauregarregarng their emerging market tras. B.Beauregarregarng monitoring market sentiment. C.Thiboaux regarng their carry tra strategy. Thiboaux’s comment about the carry tra strategy is the most accurate. Although carry tra strategies cgenerate attractive returns over long perio, the stribution of the returns suggest thcarry tras are sometimes prone to significant wnsi tail risk ring carry tra unwin. Thus, a trenfollowing trang system overlaion a carry tra strategy coulwarn investors to step asi ring unwin.Thiboaux关于套利交易策略的评论最为准确。虽然套息交易策略可以在长期内产生有吸引力的回报。但回报的分布表明，在套息交易平仓期间，套息交易有时容易出现显著的下行尾部风险。因此，套息交易策略上的趋势跟踪交易系统可能会警告投资者在平仓期间离场。 A为什么不对呢，交易不频繁时，技术分析不能使用

NO.PZ2023041102000022 问题如下 Thiboaux notes thwhile funmental-basemols are useful in explaining longer-term tren in exchange rates, they are of limitevalue when it comes to explaining short-tren. He explains:“Technicanalysis, well orr flow, sentiment, anpositioning incators have been more successful for short-term exchange rate forecasting,”The scussion of short-exchange rate forecasting continues with the following comments:Beauregar“Technicanalysis is not likely to benefit our emerging market tras because the currencies are thinly tra”Thiboaux:“Utilizing trenfollowing in our carry tra strategy shoulproteus from experiencing losses in a market unwin”Beauregar“Monitoring market sentiment following the trenin risk reversals shoulenable us to preanconfirm currenrate movements on our tras.”Whiof the comments about short-term exchange rate forecasting is the most accurate? The comment by: A.Beauregarregarng their emerging market tras. B.Beauregarregarng monitoring market sentiment. C.Thiboaux regarng their carry tra strategy. Thiboaux’s comment about the carry tra strategy is the most accurate. Although carry tra strategies cgenerate attractive returns over long perio, the stribution of the returns suggest thcarry tras are sometimes prone to significant wnsi tail risk ring carry tra unwin. Thus, a trenfollowing trang system overlaion a carry tra strategy coulwarn investors to step asi ring unwin. a trenfollowing trang system overlaion a carry tra strategy coulwarn investors to step asi ring unwin.这句话可以请帮忙一下么？什么叫 a trenfollowing trang system overlaion a carry tra strategy？