Answer:A. gray market
Explanation: A gray market is a marketing of product that does not follow a manufacturer authorized distribution channels. A gray market is usually caused by distributors who instead of selling the products to the direct or end users,they tend to sell the product to other resellers who may be outside the geographical area where the product is expected to be sold. In most cases these products are not rejected by the country where they are resold,but are accepted if it meets the regulation standards.