[求助]JJ-321求解

jessica_cxy

321
            X+Y+Z<=3,三次根号下XYZ<=X+Y+Z/3,问关于xyz哪个选项正确

A。xyz>27

B.XYZ=27

C.XYZ=3

D.3<XYZ<27

E.XYZ<3

答案是什么呢？

难道是E????????