It is said that the very best works of art are such that the

It is said that the very best works of art are such that they cannot be understood by the mass,but are accessible only to the elect who are prepared to understand these great works.____if the majority of men do not understand,the knowledge necessary to enable thenm to understand should be taught and explained to them.
A.And B.Moreover
C.But D.In addition
哪个选项是对的,