$1.$ What questions can the sensitivity report$$answer$?$

a$.$ Amounts by which objective function coefficients can change without changing the optimal solution.

b$.$ The impact on the optimal objective function value from increases$/$decreases in the availability of various constrained resources $($RHS values$)$

c$.$ The impact on the optimal objective function value from changes in decision variables away from their optimal value

d$.$ The impact changes in constraint coefficients will have on the optimal solution.

e$.$ All of the above.