What of the following applies to solving integer optimization problems with Excel Solver?
a. Input the data, choose the Solver parameters, run Solver, and define the problem.
b. Use a different method than Excel Solver, such as linear programming solvers.
c. Define the objective function and constraints, select the Solver Add-in, and click Solve.
d. Input the data, set up the decision variables, objective function, and constraints in the spreadsheet, and then use Solver to find the optimal solution.