I would suggest the problem so far with (B) is that those are very bland descriptions.
“has an interest in art” is indeed not likely to engage an application reader.
Even something like “painting” would be better, but that is only scratching the surface of what you can do even with limited characters.
Like, “painting, including pointilism”. Now that is starting to get interesting.
How about, “painting, including surreal pointilism”. Huh, what makes a pointilist painting surreal?
Now how about, “painting, including surreal pointilist landscapes”. Hmm, I wonder what that looks like?
Or, “painting, including surreal pointilist landscapes, particularly shrublands”. Shrublands? Why specifically shrublands?
Of course I am making this up (although feel free to link real examples, that sounds cool). But the point is if you use vivid illustrative examples of things you have done that you think are really cool, it engages the reader’s imagination. And we know that does a lot to make readers (in the general sense) focus on and remember things.
Ironically, I think a lot of kids believe a college application has to be in a sort of formal, stiff, resume-style voice, so they use very bland descriptions–that are in fact easily passed over quickly or forgotten. But if you let yourself really geek out about the stuff you love, that will both be more memorable and also more effectively communicate your passion, your personality, and so on. Without the risk of seeming forced or inauthentic.
Of course it may not work. But you may also be admitted as “that shrublands kid”. Worth a shot.