27. A manufacturer of prefabricated homes has decided to subcontract four components of the homes. Several companies are interested in receiving this business, but none can handle more than one subcontract. The bids made by the companies for the various subcontracts are summarized in the following table. Bids by Companies {in $1,0005) for Various Subcontracts Company Component A B C D l 185 225 193 207 2 200 190 1 75 225 3 330 320 31 5 300 4 375 389 42 5 445