Considering four departments (labeled A through D) with the following area requirements: A=8 grids, B=2 grids, C=4 grids, D=2 grids(assuming each grid is 10 by 10 feet). The materials from-to chart is given as follows. Using the space-filling curve shown below, determine the optimal layout with the MULTIPLE method(Assuming the initial layout is generated by the sequence of ABCD, unit costCij=1 )