Q. The Orange Top Cab organization has a taxi waiting at each of the four cabStands in Evanston, Illinois. Four consumers have called also requested service. The distances in miles from the waiting taxis to the consumers are given in the subsequent table. Find out the optimal assignment of taxis to consumers so as to minimize total driving distances to the consumers.

Cab site Consumer
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