long ago, a man accidently offended the king, and the king sentenced gim to death. but the man pleaded "NOU! DUN KILL MEH PLZ PLZ PLZ I DIDN'T NO IT MADE U MAD0RZ!!1!!5" then the king said "Fine, I will let you live, follow me." so the king and the man walk into a room with 2 doors, and 2 guards, each guarding one of the doors. "one of the doors is the door of life, the other is the door of death, but you cannot tell which door is which because they look exactly the same. one of the guards is the guard of truth, the other one is the guard of LIEZ. also, both the guards look exactly the same, and you may ask only 1 question, just one."
what does the man have to ask for his life?