Kelly and David are both capable of repairing cars and cooking meals. Which of the following scenarios is not possible? a. Kelly has a comparative advantage in repairing cars and David has a comparative advantage in cooking meals. b. Kelly has an absolute advantage in repairing cars and David has an absolute advantage in cooking meals. c. Kelly has a comparative advantage in repairing cars and in cooking meals. d. David has an absolute advantage in repairing cars and in cooking meals.