问题如下图：
选项：
A. 
B. 
C. 
D. 
解释：
请问D选项错在哪里呢
NO.PZ2019052001000137 问题如下 Even though risk managers cannot eliminate mol risk,there are many ways managers cprotethemselves against mol risk. Whichof the following statement about managing mol risk is correct? A.Mols shoultest against known problems. B.It is not aisable to estimate mol risk usingsimulations. C.Complex mols are generally preferable to simplemols. Small screpancies in mol outputs are alwaysacceptable. One wto proteagainst mol risk is to test amol against known problems. It is always a gooia to chea mol againstsimple problems to whione alrea knows the answer, anmany problems cbestilleto simple specicases thhave known answers. If the mol failsto give the correanswer to a problem whose solution is alrea known, thenthis incates ththere is something wrong with it. 老师请问这个知识点在讲义哪里？能否截图一下
NO.PZ2019052001000137 请问什么错？
NO.PZ2019052001000137 麻烦解析下b，我不太懂
NO.PZ2019052001000137 A的话，我记得不是说一个模型好坏，不可以用已知问题来test嘛？因为你这个模型本来就是已知问题作为输入量建立出来的，用已知去测试那肯定是只会得出高度拟合的结论啊？
It is not aisable to estimate mol risk usingsimulations. Complex mols are generally preferable to simplemols. Small screpancies in mol outputs are alwaysacceptable. One wto proteagainst mol risk is to test amol against known problems. It is always a gooia to chea mol againstsimple problems to whione alrea knows the answer, anmany problems cbestilleto simple specicases thhave known answers. If the mol failsto give the correanswer to a problem whose solution is alrea known, thenthis incates ththere is something wrong with it. 老师 C 错在哪里 不是鼓励使用简单模型吗
