can you help me.

MC ATC AVC K L G Dollars Demand N = MR M E :H R 0 A B C D Quantity Based on the diagram above, a) What is the level of output that this firm will produce? b) Is this firm making an economic profit? c) What is the amount of the profit/loss? Note: define the area d) Give an example of a perfectly competitive firm and explain why the demand curve facing the firm would be horizontal (perfectly elastic)