During the Persian Gulf War many of Kuwait's oil refineries were destroyed. This would best be represented by a. a movement down Kuwait's production possibility frontier. b. a movement off Kuwait's production possibility frontier to some point inside the frontier. C a shift of Kuwait's production possibility frontier back and to the left. d. a movement up Kuwait's production possibility frontier. In terms of the production possibility frontier, an increase in productivity attributable to new technology would best be shown by a. a movement along the frontier. b. the production possibility frontier shifting up and to the right. C. a movement from a point inside the frontier to a point on it. a movement toward the origin