Originally Posted by maddyfish

I'd be just to the right of position B, far enough right that a car would be unable to pull up beside me.
C and D are death traps for a right hook. I don't understand A at all.

Where your B position is located you encourage cars to pull up beside you to turn right, or to go straight. It is the ones that pull up beside you to go straight that are dangerous. Don't leave room for them.
Don't let anything ever pass you in your lane if at all possible.