Interpret this sensitivity report for the variable cells
Final Reduced Objective Allowable Allowable
Cell Name Value Cost Coefficient Increase Decrease
$B$13 A 9 0 5 1E+30 1.25
$C$13 B 0 -2 6 2 1E+30
$D$13 C 0 -2 1 2 1E+30
Answer: Decision variable A is the only variable that appears in the optimal answer. Nine units of A are optimal and the coefficient is 5, so the objective function value is 45. The optimal answer will remain nine units of A as long as the coefficient remains in the range of 3.75 to infinity. Decision variable B, with a coefficient of 6, is not used in the optimal answer. If the coefficient of B increased to 8 or beyond, it would enter the model with a positive value. If the value of B's coefficient drops by any amount, it will not enter the decision space. Similarly, C with an objective coefficient of 1, is not in the answer unless the coefficient increases to 3 or beyond. If we added a constraint that required either B or C to enter the solution, the value of the objective function would drop by 2, from 45 to 43.
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