请教GWD-7-29

GWD-7-29

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.

1. Adam Smith’s two major books are to democratic capitalism what
2. Adam Smith’s two major books are to democratic capitalism like
3. Adam Smith’s two major books are to democratic capitalism just as
4. Adam Smith wrote two major books that are to democratic capitalism similar to
5. Adam Smith wrote two major books that are to democratic capitalism what

请教大牛，为什么此题答案要选E，而不选C呢？C答案中Adam Smith’s 对应Marx’不是很好么？

3X!

固定搭配a is to b what c is to d

c:Adam Smith’s two major books不能作为A leading figure in the Scottish enlightenment的修饰对象

请教：a is to b what c is to d中的what c is to d是什么成份，怎么讲？

3X!

选E是因为句子主语要对应前面修饰语中的"A leading figure..."