1. Using the continuous multi-facility rectilinear minisum heuristic (location-allocation) we learned in class, find the optimal location of (a) two, and (b) three facilities, given the following data: The starting districts are as follows: a) District 1 is made up of Customers A through H and District 2 is made up of Customers I through O. b) District 1 is made up of Customers A through E, District 2 is made up of Customers F through J, and District 3 is made up of Customers K through O