The pigments used in modern oil paints are different than the ones used in older paints because they are more lightfast and vibrant.

A. are different than the ones used in older paints because they are
B. differ from those used in older paints in that the modern ones are
C. are different than those used in older paints because the modern ones are
D. are different from the ones used in older paints on account of being
E. differ from the ones used in older paints because they are

What's wrong with options B and D? Can any experts help?