basil and celery leaves are substitutes in making noodle soups. a rare drought destroyed a good portion of local celery supply, ceteris paribus, we have ____, A. the price of both celery and basil will fall. B. the price of both celery and basil will increase. C. the price of celery will increase, and the price of basil will fall. D. the price of celery will fall, and the price of basil will increase.