Which vendors should UES select to supply each distribution hub?

\\Answer ! 21 . United Express Service ( UES ) uses large quantities of packaging materials at its four* distribution hubs . After screen ening potential suppliers , UES identified six vendors that can provide packaging materials that will satisfy it's quality standards . JES asked each of the six vendors to submit bids to satisfy annual demand at each of its four distribution hubs over the next year . The following table lists the bids received ( in thousands of dollars ) . JES wants to ensure that each of the distribution hubs is serviced by a different vendor . Which `bicis should JES accept , and which vendors should UES select to supply each distribution hub ? Distribution Hub Bidder 4 Martin Products 190 175 125 230 Schmidt 150 235\\ 155 220 Materials Miller Containers 210 225 135 260 D&* ) Burns 170 185 190 280 Larbes 220 190 140 240 Furnishings Lawler Depot 270 200 130 260 The quantitative methods department head at a major midwestern university will be