I'm more of a B person, but this one time I found a wood chip imbedded in a square, and not just a little sliver, mind you. Like, about an inch long and maybe a sixteenth of an inch wide. So sometimes A seems better. Of course, my toilet paper holder is broken, so it just sits on the edge of the vanity.
I'd get rid of the cats, personally, but my wife is against it, so we just close the bathroom door.