Q is probably how the ladies do it.We don't do static showerheads, we have handheld showerheads over here, so... we're all over the place 😂.
Both A and B are tall people problems. I hate staying at a hotel where the nozzle is at about 60in and I can only water my nipples.
C all the way. Sit there and let the dandruff shampoo do its job. Relaxing. Not with my head in the water of course.
If your shower doesn't include every one of these positions, are you even washing yourself?