Find an initial solution to the following transportation problem. B From Y z Demand A $10 $17 $20 50 $18 $13 $18 80 $12 $9 $14 70 Supply 100 50 75 Based on the given demand and supply, the given transportation problem is unbalanced Before finding the initial solution, a dummy destination should be introduced. The starting solution using northwest-corner method is: (Note: You must enter a shipment in every cell, even if the shipment is 0.) A B Dummy $10 $180 $121 From Supply X 100 $17) $131 $9 0 50 $20 $180 $141 0 75 Demand 50 80 70