According to paragraph 3, what was a major problem with Renfrew's model? A. He overlooked the fact that only the Minoan palaces had access to domesticated vines and olives. B. He wrongly assumed that the introduction of domesticated vines and olives led to the cultivation of more land. C. Trade in domesticated plants was much more important to the emergence of Minoan palace economies than he thought. D. Domesticated vines and olives do not appear to have been available as early as he thought.