The author discusses the impact of gray marketing on goodwill in order to A. fault trademark owners for their unwillingness to offer a solution to a major consumer complaint against gray marketing B. indicate a way in which manufacturers sustain damage against which they ought to be protected C. highlight one way in which gray marketing across markets is more problematic than gray marketing within a market D. demonstrate that gray marketing does not always benefit the interests of unauthorized distributors E. argue that consumers are unwilling to accept a reduction in price in exchange for elimination of service