Out of food and starving, they have all agreed that one of them had to die.
The other two would live off of the dead person till rescue found them.
All three guys are single, same shape and weight, and all had the same skills.
None of them had any family, were all orphans when they were kids.
How did they decide this so easily on who should be sacrificed for the other two???
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ANSWER 
He absolutly refused to eat any kind of meat so naturally he agreed to be sacrificed!!!