NO.PZ2018053101000044
问题如下：
Which is not true of mark-to-model valuations?
选项：
A.Return volatility may be understated. B.Returns may be smooth and overstated. C.A calibrated model will produce a reliable liquidation value.解释：
C is correct. It is not true that a calibrated model will produce a reliable liquidation value in a mark-to-model valuation. The need to use a model for valuation arises when an asset is so illiquid that there are not reliable market values available. A model may reflect only an imperfect theoretical valuation, not a true liquidation value, should liquidation become necessary. The illiquid nature of alternative assets means that estimates, rather than observable transaction prices, may have been used for valuation purposes.
A and B are not correct because they are both true statements.
我是根据a,b都对排除出的c，请问一下c是什么意思，考核的是哪个知识点，以及错在哪里，谢谢。我查了calibreate是校准的意思，感觉字面意思不理解为什么错
