Where YOUR selected defenses go

[3072BBots]

Say you are in the Blue Castle, would you place your defenses in position A or B? 5.5.10 states "i.e. the Red ALLIANCE selects the Blue ALLIANCE DEFENSES." So I would say, since you're in the Blue Castle, you would get to put them in B. That sounds pretty odd, considering you would play your strengths and pick defenses you KNOW you can get over easily. Is this true, or am I reading this wrong?
https://drive.google.com/file/d/0B3Q...ew?usp=sharing