Suppose that an economy originally has a bowed outward production possibilities frontier (PPF) for military goods and civilian goods. An improvement in technology that allows only more military goods to be produced, but not more civilian goods, would cause a. the entire PPF to shift rightward. b. the endpoint of the PPF to shift rightward for military goods, but the endpoint of the PPF for civilian goods would remain at its original point. c. the endpoint of the PPF to shift rightward for civilian goods, but the endpoint of the PPF for military goods would remain at its original point. d. the entire PPF to shift leftward