Currently an economy is producing (at a point on its production possibilities frontier) 100 units of good X and the opportunity cost of producing 1X is 3Y. If good X is produced at increasing opportunity costs, then when the economy produces 120 units of good X (on the same PPF) the opportunity cost of producing 1Y (not 1X) could be O 1/4X. O 1/3X. O 1/2X. O 1X. O none of the above