. e An automobile manufacturer believes that the annual new car sales of a dealership: increases with the per capita income (PCI) in the market area of the dealership in a diminishing returns manner increases with the population in the market area decreases as the number of competing dealerships within a ten-mile radius increases. The associated regression model and anticipated signs for the regression coefficients are: A. Sales=B+BPCI+ B,Population+ B,Competitos +&, with B, 0, B 0, B > 0, 0,3