Bosch has established a distribution network for the supply of washing machines from its three plants to three warehouses. The current network has the following characteristics:

$\backslash$table$[[$COSTS$,$Warehouse $1,$Warehouse $2,$Warehouse $3,$Supply$],[$Ambala$,8,6,9,300],[$Vellore$,10,9,12,500],[$Goa$,7,4,3,400],[$Demand$,350,450,400,]]$

The unit costs, supply and demand are given in the table. Apply NWC method to identify the initial feasible solution and futher identify optimal solution. $[6]$