Need help in part c please. Not sure how to calculate profits in the long run.

1. (10 points) Consider a monopolist that has costs equal to: C = 1000 + 10 Q + 2.5 Q2 And which faces a demand curve: Q=230-P/2 a) How much will this monopolist offer to the market? What price will the monopolist charge? What are the profits of the monopolist? b) Draw a graph of your solution. c) What are the profits of the monopolist in the long-run? d) Is this monopolist a regulated monopolist or a natural monopolist