Hudson pool and spa, owned by jill and joel hudson, sells and installs above-ground swimming pools and beachcomber brand hot tubs. the manufacturer of the beachcomber hot tub has sent the hudsons a letter in which it offers to pay 50 percent of the advertising cost if the hudsons will run a newspaper ad featuring the beachcomber hot tubs. what type of advertising is the beachcomber manufacturer suggesting they use?