TEAM Ltd. Co. wishes to purchase a maximum of 3600 units of two types of products, A & B which are available in the market. Product A occupies a space of 3 cubic feet & cost Birr 9 whereas B occupies a space of 1 cubic feet & cost Birr 13 per unit. The budgetary constraints of the company do not allow spending more than Birr 39,000. The total availability of space in the company's is 6000 cubic feet. Profit margin of both product A & B is Birr 3 & Birr 4 respectively. Formulate the above problem as a linear programming model and solve it by using graphical method. You are required to ascertain the best possible combination of purchase of A & B so that the total profit is maximized. Required: Analyse the sensitivity of RHS and objective function value using the graphical approach?