3. Consider the Wagner-Whitin problem with T = 8, K = 600, h = 3, and (d1, ..., dg) = (75, 95, 40, 120, 50, 70, 35, 80). Implement the integer programming formulation of the Wagner-Whitin model in AMPL or another mod- eling language and solve it. Report the optimal solution (including *, y7, and 1;) and the optimal total cost. Include a printout of your AMPL (or other) files. 3. Consider the Wagner-Whitin problem with T = 8, K = 600, h = 3, and (d1, ..., dg) = (75, 95, 40, 120, 50, 70, 35, 80). Implement the integer programming formulation of the Wagner-Whitin model in AMPL or another mod- eling language and solve it. Report the optimal solution (including *, y7, and 1;) and the optimal total cost. Include a printout of your AMPL (or other) files