a. Two companies A and B are competing in the same market for the sale of milk. Each of them has three alternative advertisement strategies to pursue and their payoff matrix which is the net returns from advertizing are as follows: B B1 B2 B3 Al 4 3 3 A A2 5 A3 4 4 1 . Find the best advertising strategies for both A and B [7] 11. Find the value of the game? [3] 111. Explain the assumptions of the game model that had been used in solving this problem. [5]