1. Megaweight Bhd needs to distribute several spare parts boxes from three factories to four assembly centers. The monthly supply and demand and shipping cost of a box are as follows: + Kilang Bekalan Pusat Pemasangan Permintaan Factory Supply Assembly Plant Demand SM-A 150 ap-1 130 SM-B 210 ap-2 70 SM-C 320 ap-3 180 ap-4 240 Kos Penghantaran Satu Kotak / Transportation Cost Per Box Destinasi/Destination ap-1 ap-2 ap-3 ap-4 Asal/Origin SM-A 14 16 18 CO CO SM-B 11 7 16 SM-C 16 12 10 22 i. Show the initial solution using the North West Method. li. Show the optimal solution using the Stepping Stone Method or MODI. What are the total monthly transportation costs for the optimal solution