10 marks). Explain how RPM can be used to increase retailer demand for inventories and thereby increase manufacturer profit. Explain whether profitable RPM can either increase or decrease welfare and how this depends on the variation in demand. Use diagrams and verbal explanation to explain your answer. Demonstrate the profit and welfare consequences of RPM by solving the 'RPM and Inventories Model' model done in class for the parameter value indicated below. RPM and Inventories Model Manufacturer MC = 0, Dealer MC = 0, Low and high demand are equally likely Low demand: qL = 1 - pL, High demand: qH = S(1 - pH) Parameter value: S = 4