D的问题

NO.PZ2016082405000044 Whiof the following statements regarng counterparty cret risk is most accurate? Counterparty risk is unilateral. Over-the-counter (OTrivatives contain less counterparty risk thexchange-trarivatives because the counterparty is known. The precise future value of the contrais uncertain, but the counterparties are aware of whether the future value will positive or negative. Counterparty risk is typically associatewith counterparty fault prior to the settlement rather thfault ring the settlement process. Counterparty risk is a bilaterrisk in thboth parties are unaware of the eventuvalue of the contraanthey not know whether they will earn a profit or loss. For exchange- trarivatives, the counterparty is the exchange, whieffectively mitigates counterparty risk. While counterparty fault chappen presettlement anring settlement, counterparty risk typically applies to the risk of fault prior to settlement. 请问c错在哪里 难道是要改成都无法确定是+或-

Whiof the following statements regarng counterparty cret risk is most accurate? Counterparty risk is unilateral. Over-the-counter (OTrivatives contain less counterparty risk thexchange-trarivatives because the counterparty is known. The precise future value of the contrais uncertain, but the counterparties are aware of whether the future value will positive or negative. Counterparty risk is typically associatewith counterparty fault prior to the settlement rather thfault ring the settlement process. Counterparty risk is a bilaterrisk in thboth parties are unaware of the eventuvalue of the contraanthey not know whether they will earn a profit or loss. For exchange- trarivatives, the counterparty is the exchange, whieffectively mitigates counterparty risk. While counterparty fault chappen presettlement anring settlement, counterparty risk typically applies to the risk of fault prior to settlement. 老师，这题B怎么理解？为啥是错的呢？

Over-the-counter (OTrivatives contain less counterparty risk thexchange-trarivatives because the counterparty is known. The precise future value of the contrais uncertain, but the counterparties are aware of whether the future value will positive or negative. Counterparty risk is typically associatewith counterparty fault prior to the settlement rather thfault ring the settlement process. Counterparty risk is a bilaterrisk in thboth parties are unaware of the eventuvalue of the contraanthey not know whether they will earn a profit or loss. For exchange- trarivatives, the counterparty is the exchange, whieffectively mitigates counterparty risk. While counterparty fault chappen presettlement anring settlement, counterparty risk typically applies to the risk of fault prior to settlement. settlement期间不会产生违约风险嘛。。

     怎么理解 Counterparty risk 更多是在settle 之前违约？