Instant Foto Corp. is a manufacturer of photography film. At the present time, Instant Foto has approximately 50 percent of the market. Instant Foto advertises that the purchase price for Instant Foto film includes photo processing by Instant Foto Corp. Instant Foto claims that its film processing is specially designed to improve the quality of photos taken with Instant Foto film. Is Instant Foto’s combination of film purchase and film processing an antitrust violation? Explain.