Answer:
The correct answer is letter "D": Consumer preferences are markedly different in the two markets.
Explanation:
Price discrimination comes into place when a good or service is offered at different prices to different people. For price discrimination to be legal, the benefited party must be somehow unfavored which mill justify the differences in the price offers.
In the business world, companies apply price discrimination as well when their products are sold in different regions. This is to attract new customers who do not have the same preferences as the company's consumers in its usual region.