a) You reveal yourself. Martel has warned you about northern pride and impatience, and you're fairly sure that this would go more smoothly if you just made yourself known... even if it means capture.
b) Let Martel handle this. Though he's never actually dealt with the northern tribes, he at least knows of them, and a little bit about them. He might be able to counter whatever this chieftain is planning.
c) Under no circumstances whatsoever will you reveal to this man who you are. He's huge, and muscular and tattooed, and clearly very skilled in combat. Wait... is that... is that a battleaxe you spy in the chariot?
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