Can you assist with the questions of this graph?

70 60 50 MC 40 ACT Cost and revenues 30 DY 20 10 MR 0 10 20 30 40 50 60 70 80 90 Quantity per period a. Label the four curves in the graph above. Double-click on each of the question marks on the graph and b. What is the profit-maximizing output and price? Output: units Price: $ C. At the output in (b), what are the amounts of Total cost: $ Total revenue: $ Economic profit: $ d. How much excess capacity exists? units e. What will the presence of economic profits do? [(Click to select)