The table below presents the demand schedule and marginal costs facing a monopolist producer. a. Fill in the total revenue and marginal revenue columns. Instructions: Enter your answers as a whole number. If you are entering any negative numbers be sure to include a negative sign (-) in front of those numbers. Leave no cells blank. Enter 0 if appropriate.\fb. What is the profit-maximizing level of output? units c. What price will the monopolist charge to maximize profits