11 Given QM output on a product-mix problem as below: Objective: Maximize Results ---------- X1 X2 RHS Dual --------------------------------------------------------------------------------- Maximize 40 50 Material A 1 2 <= 40 16 Material B 4 3 <= 120 6 Material C 2 7 <= 300 0 --------------------------------------------------------------------------------- Solution 24 8 1,360 Which material(s) is (are) scarce resource(s) in the production? Material A. Material B. Material C. Material A and Material B. Material B and Material C. Material A and Material C. All the three materials are scarce resources. All the three materials are excessive resources