Why Might an Asian Wet Rice Farmer Choose NOT to Adopt

Why might an Asian wet rice farmer choose NOT to adopt Canadian techniques of intensive agriculture?

A) The chemical products required by this type of agriculture are not available to him.
B) The North American method is far less efficient in terms of proteins expended to proteins produced.
C) The North American method produces toxic substances that destroy delicate ecological balances.
D) The North American method,while successful in the long term,is likely to have destructive short-term impacts.