This is a simple question really.
What is the CR of a 6th level Orc Warrior?
Is it:
a.) "6, +1 per level"
b.) "5, because the first level of warrior is only worth 1/2 CR, or they can trade in their 1 HD for a level of warrior"
c.) "3, because all NPC classes only add +1/2 CR per level"
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