Choice "C" is correct. Collusive pricing anticipates that competitors will collude or conspire to maintain prices and mutual profitability. Collusive pricing undermines competitive pricing and maintains prices to external customers at levels higher than they would be in a competitive market place.Choice "a" is incorrect. Dual pricing involves appropriately assigning different prices to the same product in different market settings. Dual pricing is a sophisticated extension of competitive pricing. The prices are simply established at the levels appropriate for each market and would not result in higher prices than would be experienced in competitive markets.Choice "b" is incorrect. Predatory pricing strategies typically result in lower prices to external customers than competitive pricing. Predatory pricing (below market or even below cost) is undertaken by larger organizations that can absorb losses and deliberately do so in an attempt to drive smaller, less capitalized, competitors from the market place.Choice "d" is incorrect. Transfer pricing is the charge made between affiliates for products or services. Transfer prices may be at any level including cost and market and do not relate to the establishment of prices to external customers.