BUT, definatly option B, so you can easily unroll it by placing your hand on top of the roll and spin it outward/downward instead of toward the wall/upward. I usually swap it if it's in the holder per option A.
but my all time faverate wasn't there the turtle head its when you already convence yourself that no-ones in the bathroom and before you get there the process starts aka the turtle head lol :-X