In the absence of both transportation costs and artificial trade barriers, the world corn market achieves equilibrium with.?
a) the price at $8, trade volume at 2 million tons, and total world output
b) the price at $10, trade volume at 1 million tons, and total world output
c) the price at $5, trade volume at 3 million tons, and total world output
d) the price at $12, trade volume at 2.5 million tons, and total world output