A company manufactures a product at its plants in A, B , and C, then ships the product to six customers in G, H, J, K , and L, The monthly capacity of plants A, B , and C are 6200, 6000, and 6500 units, respectively. The monthly demand from customers G, H, J, K , and L are 4900, 1800, 2800, 6800, and 2200 units, respectively. Use Excel Solver to find the optimal distribution plant that will give the lowest total monthly shipping cost if the shipping cost per unit (in dollars per unit) are as follows: - from A to G, H, J, K, and L are 15, 2, 12, 7 , and 10 dollars per unit, respectively: - from B to G, H, J, K , and L are 6, 17, 3, 12 , and 7 dollars per unit, respectively; - from C to G, H, J. K , and L are 7, 9, 20, 4 , and 9 dollars per unit, respectively. The optimal total shipping costs is dollars per month