I require some assistance for this question, specifically b, c and d. I have completed the table that was provided for this question. The first part of the question wanted to know the TR, MR, MC and profit which I did and have included. I completed part a which wanted the table filled out. So I just require help with b, c and d please, thank you.

The data for two firms (Firm 1 and Firm 2) are given below. There is no fixed cost.

P TR MR TC MC Profit 45 45 45 10 10 35 W N - O 40 80 35 20 10 60 35 105 25 30 10 70 30 4 120 15 40 10 80 25 5 125 5 50 10 75 20 6 120 -5 60 10 60 15 7 105 -15 70 10 35 10 8 80 -25 80 10 0