Turkish Airlines is planning to schedule her aircrafts to newly opened destinations. The cost data about allocations of aircraft to new destinations is given in the following table. The cost "20" in the table means "20.000 thousands". The objective is to assign aircraft to new destinations such that the total cost of assignment is minimum. Please find optimum allocation of aircraft that minimizes total cost. Aircraft A380 1 20 15 19 25 New Destinations 2 25 18 17 23 3 22 23 21 24 4 28 17 24 24