A crossdock is being planned that will feed parts to three manufacturing facilities. The locations of the current plants with their coordinates and volume requirements are given in the following table. Use the centroid method to determine the optimal location for this crossdock. Please clearly mark your x and y answer at the top. . Plant location Coordinates(x,y) Volume (parts/year) A 55,20 5000 B 37,40 7000 C 80,90 1000