Let the artwork be abbreviated as A, B, C, D, E, F.
And each gallery should have at least one art work.
Gallery A: --> [A,B]
Gallery B: --> It should have 3 types of artwork, [A,B]
Gallery C: F --> ~[A,B], F
Artwork C and E should not be together.
So, from above we can infer, Gallery C should have at least have artwork F, and number of artwork in Gallery C cannot be more than 2, since each gallery must have at least one artwork.
So, we are left with only, Cubist and Folk only and Folk only options for Gallery C.
Now, if we take first option Gallery C having Cubist and Folk only, then:
We can not put artwork A, B in gallery A, else we will have 2 artworks in gallery B. So, artwork A, B will be in gallery B.
Gallery A: --> [A,B]
Gallery B: A, B --> It should have 3 types of artwork, [A,B]
Gallery C: F , C --> ~[A,B], F
From above we can come into conclusion artwork D, E can be in gallery B or gallery A.
From options, we can see match artwork E to gallery A.
So, our final answer will be,
Gallery A --> Artwork E onlyGallery C --> Artwork C, F onlyWe don't need to check further options.