Truth and lie?

Question

U have Two persons one of them talk just truth another one he talks but lie i don't know which one of them truth or lie

U have one question to know Which one of them lie and truth

let me see the answer

if u give up see u on messenger

Answer 1

behaviour never lies.... character do

Answer 2

Take both to a fork in the road.  You know which path to take to get to a specific location X.  Ask one of them which path leads to X.  The truth teller will give the correct direction.  The liar will give the wrong one.

Answer 3

wear something hidious and ask them both what they think, you will know the liar by the one saying its a nice outfit...