A leading figure in the Scottish enlightenment, Adam Smith’s two major books are to democratic capitalism what  Marx’s Das Kapital is to socialism.

A    Adam Smith’s two major books are to democratic capitalism what

B    Adam Smith’s two major books are to democratic capitalism like

C    Adam Smith’s two major books are to democratic capitalism just as
 
D    Adam Smith wrote two major books that are to democratic capitalism similar to

E    Adam Smith wrote two major books that are to democratic capitalism what

我选了C。答案是E。基本上没什么问题，想问一下哪些词可以连在平行结构里面（这里面是what）？另外C里面是什么错误？是不是连接平行结构as前面不可以加just?

谢谢。

我觉得应该是A啊
有个结构是
A1 is to A2 what A3 is to A4
意思是A1对于A2来说就像A3对于A4

选了E的话都不平行了啊～～
请大家指教～～