Problem 4 {10 points} The diagram below shows the cost curves for a perfectly competitive wheat farmer. At what price(: does the wheat farmer earn an economic prot\".J Earn a zero prot? Incur an economic loss? Ho' many bushels of wheat does the farmer produce if the price is $3 per bushel? If the price is $0.50 p: bushel? Revenue and cost {dollars per bushel) 0 ID 20 30 40 50 Output. (thousands of bushels per year)