Toys R Us Is an International Toy Retailer

Toys R Us is an international toy retailer.The Justice Department has just filed a complaint against the giant retailer alleging that Toys R Us refuses to carry toy lines or toys if the manufacturers sell their products to discount warehouse stores such as Sam's Club or Costco.Toys R Us maintains that when manufacturers sell toys to these warehouses,they sell only the hot toy items for the Christmas season at large discounts.Their pricing undercuts Toys R Us and Toys R Us must carry a full line of toys,even those they do not share the same demand levels.Toys R Us:

A) has not violated any antitrust laws.
B) may have engaged in a refusal to deal.
C) may have engaged in a price-fixing conspiracy.
D) both b and c