Door A2

You stumble over to the door that says A2, tripping over your own feet. You open the door and step inside. There is a dim glow and you can see tables filled with weapons of all kinds. Stakes holy water, crossbows, swords, and more. You walk to all the tables; clothes that touch the ground cover them. And the weapons lay on top. You grab three stakes and a crossbow. You take a sword and hide it under your long coat. You walk to the back of the room and see three doors. B1, B2, and B3. Which do you enter?