I have never cooked them in steak form, only roast form but I have seen pics with the big hunk of fat running down one whole side.
Put the fat at the end of your cut and go against the grain, like a flank steak would.....cut when it's cooked.
I think anyways.....
If the other side of that roast is a fat cap I think pic B is the one.
Like I said, never did it before but if you don't cut it against the grain, I think your results will be very poor.
These cooked in roast form to about 125 ( I like mine rare but not raw, and rest it for 20 minutes ) and cut very thin against the grain make excellent hot and cold beef sandwiches. I make a horseradish, mayo sauce ( it has vinegar and spices too ) for this application and a sharp slice of cheese.
I trim the fat cap off when I do this and it can handle a pretty high amount of rub as the slices are very thin.