Gravity models are often used to predict retail sales. Which statement would the model support? A. Larger shopping centers attract proportional more shoppers on a per capita basis than smaller shopping centers. B. Larger shopping centers attract proportionally less shoppers on a per capita basis than smaller shopping centers. C. Smaller shopping centers attract more shoppers on a per capita basis than larger shopping centers. D. Two shopping centers in close proximity, the larger shopping center will attract a proportionally great number of shoppers on a per capita basis than the smaller shopping centers. C and D A and D A and B B and C