Yes, I'll say it a different way but D is spot on.
The metal is a sheathing or siding, not the structure of the wall (typically). You build a stud wall, insulate it, put a moisture barrier on the inside to keep humid air out of it and put a vapor barrier on the outside to keep air from washing (removing) the heat from the insulation. Over top of that you add 1/2-1" battens and attach the metal to them. That air gap is vented at the top and bottom so it should be full of exterior air that's a bit warmer than ambient due to the warmth of the building. When condensation forms, it can run down the metal. If it gets on the housewrap, no biggie since it's waterproof. Just need to make sure it can get out at the bottom without weeping in under the bottom of the wall.
I hope that clears it up, if not, keep the questions coming!