QUESTION 2 The diagram below illustrates the PPFs for two countries that produce two goods. The two countries are free to trade with one another. if A Which of the following production combinations are productive efficient? O Country 1 is at point C; country 2 is at point D. O Country 1 is at point A; country 2 is at point B. 0 Country 1 is at point C; country 2 is at point A. C) All of the above are efficient