Choice B -- center steel rail (but with 3" rise on treads instead).
Q
Choice C -- partially hidden steel stringer on both sides attaching to steel plate at landing (but with 3" rise on treads and wood rail).
Choice D-- floating stairs attached to wall side (but with 3" rise on treads and add wood rail).
wood rail
wood treads with center steel support
floating stairs attached to wall with steel plate showing
Treads attached to wall tapered on end
Deeper wood treads with center steel support
wood topped rail
interesting way to attach glass rail to floating treads.
clean, great looking combination of glass and wood rail
bronzed steel straight stringers on both sides
Choice B -- center steel rail (but with 3" rise on treads instead).
Q