Revealing mistake: When the cannibal throws Francine on the floor, you can see her pulse in her neck.
Revealing mistake: In the scene where Chris is hiding under the bed with Eliza Dushku and the mountain men bring in the corpse of the red-haired girl who was nearly decapitated by the barbed wire and dump it on the floor, the 'corpse' is still breathing.
Answer: The chosen answer is incorrect. In part 2, the old man turns out to be one of them. He tells Dale, you killed my boy! The 3 cannibals are his sons.