Below is production possibilities data for the countries of Mental and Etheric. Mental's production possibilities (in millions of units) A B C D E Soya Milk 80 60 40 20 0 Rice Cakes 0 10 20 30 240 Mental's production possibilities (in millions of units) A B C D E Soya Milk 160 120 80 40 0 Rice Cakes 0 30 60 90 120 Refer to the information above to answer this question. If both countries produce combination D what will be the combined outputs? a. 120 million units of soya milk and 100 million units of rice cakes. b. 50 million units of soya milk and 130 million units of rice cakes. c. 60 million units of soya milk and 120 million units of rice cakes. d. 60 million units of soya milk and 130 million units of rice cakes