Consider the figure at the right, which represents the production possibilities boundary for pizzas and guns. The combination(s) of pizzas and guns at A. points A and C require more resources than at point B. A O B. point B is efficient and attainable. O C. point A is more efficient than at point C. B O D. points A and C are attainable and efficient. Quantity of Pizzas O E. points A and C are less efficient than at point B. C Quantity of Guns