A company manufactures two types of products: A and B. Profits of A and B are 2 and 4 Rials per unit, respectively. Monthly sales capacity for all products is at least 4 units. This company has 20 kilograms (kg) material in its warehouse. To manufacture each unit of products A and B, we need 1 kg and 2 kg of material, respectively. The company wants to maximize its profit. a. Formulate a linear programming model for this problem. b. Solve the linear programming model by graphical solution technique. (10 Marks) (10 Marks) 30 Marke