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Suppose that a nation currently is producing combination B in the table below and on the graph of the production possibilities curve to the right. What is the opportunity cost of producing 20 million more tablet devices and moving to production combination D? A 50 B Smartphones Tablets C Combination (millions per year) (millions per year) 40- 50.0 48.0 10 E 45.0 20 30- 40.0 30 33.0 40 20- 22.5 50 0.0 60 Smartphones (millions per year) 10- The opportunity cost of producing 20 million more tablet devices and moving from production combination B to production combination D is million smartphones G per year. (Enter your response rounded to one decimal place.) 10 20 30 40 50 60 Tablet Devices (millions per year) Enter your answer in the answer box and then click Check Answer. All parts showing Clear All Check