The accompanying graph shows the cost curves for Mei's mushroom gathering business, which is perfectly competitive. The graph plots quantity in bushels per month versus price in dollars per bushel. Three curves marked A, B and C are shown in the graph. Mei's short run supply curve is Select one: a. curve B to the right of curve A. b. curve A above curve B. c. curve A above curve C. d. curve C to the right of curve A