Option C, do nothing. If you collect enough PSA slabs to worry about the registry, you like all the others have altered(possibly fake) cards in your collection. Also no reason not to have it in your registry set for the same reason as above.
I like the idea of grading so novice collectors don't get screwed by fake/altered cards. Unfortunately that is not how it works in the real world. To collect graded cards you have to be more of a expert not to get taken advantage of.