Use Table: Demand and Cost for a Monopolist

Use Table: Demand and Cost for a Monopolist. The table shows the quantity demanded, price level, and total cost faced by a monopolist.
​A) Fill in the columns for total revenue, marginal revenue, marginal cost, and average total cost.
B) What are the profit-maximizing price and the quantity for the monopolist? Explain.
C) At the profit-maximizing point, what is the profit per unit for the monopolist?
D) At profit-maximizing point, what is the total profit?