Can anybody help me with this, pls?

3 Pet Food Suppliers Dominating the Industry-but Competition is Heating Up As pet owners look to buy more nutritional pet food, the three market leaders seem slow to adapt.. Source: markets.business According to the news clip, what is the current structure of the pet-food market? What might be the reason that three firms dominate the pet food market? ... . The structure of the pet-food market is O A. perfect competition because the pet food from one firm is a perfect substitute for pet food from another firm O B. oligopoly because it is dominated by three firms O C. monopolistic competition because the pet food from each firm is slightly different than its competitor's O D. oligopoly because all pet-food suppliers compete in advertising The pet-food market might be dominated by three firms because ext O A. consumers are loyal to the three existing firms sou O B. the firms are price takers and smaller firms cannot compete at This price tudy O C. large economies of scale may make them a natural oligopoly D. legal barriers to entry prevent the entry of other firms