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 😂.
C all the way. Sit there and let the dandruff shampoo do its job. Relaxing. Not with my head in the water of course.
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.