Kenny McCormick manages a 100-unit apartment building and knows from experience that all units will be occupied if rent is $900 per month. McCormick also knows that, on average, one additional unit will go unoccupied for each $10 increase in the monthly rental rate. A. Estimate the apartment rental demand curve assuming that it is linear and that price is expressed as a function of output. B. Calculate the revenue-maximizing apartment rental rate. How much are these maximum revenues