Q. The orange top cab organization has a taxi waiting a each of four cabstands in Evanston, Illinois. Four customers have called also requested service. The distances, in miles, from the waiting taxis to the customers are specified in the subsequent table. Find out the optimal assignment of taxis to customers so as to minimize total driving distances to the customers.
Cab site A B C D
Stand 1 7 3 4 8
Stand 2 5 4 6 5
Stand 3 6 7 9 6
Stand 4 8 6 7 4