1) A sector with headboard against the bathroom is bad.
2) B sector is not the favorable kua direction for both of you.
3) C sector is the best with a long wall supporting but the room door opens toward the bed which create a fast qi hitting the bed. You can place a screen to block it.
4) D sector is usable provided it is not a full length window and if it is a half length window you can use a thick curtain to block it. Also do not place your bed in such a way that it will point to the room door directly.