The following economy produces two goods: Production Possibilities Product A B C D E Tanks 0 1 2 3 4 5 Autos 1000 950 850 650 350 Refer to the above table. According to the production possibilities schedule, a combination of four tanks and 650 autos is: O A. Attainable, but involves an efficient use of society's resources O B. Attainable, but would not be in the best interests of the country O C. Unattainable because this economy doesn't possess sufficient resources to produce this combination O D. Unattainable because this economy has unemployed resources