Under basing-point pricing, if the city of Denver, CO is the basing point, then a consumer located in San Francisco who purchases a good from a firm located in the town of Poughkeepsie, NY will pay a delivered price (the mill price plus freight/shipping costs) in which shipping cost is based on: Select one: O a. shipping from Denver to San Francisco. O b. shipping from Poughkeepsie to Denver. O c. shipping from Poughkeepsie to San Francisco. O d. none of the other choices