A．demonstrates the bad quality of these items 
B．gets them to purchase some other articles 
C．earns some dirty money from these items 
D．persuades the rich customers to buy 

A．is often used with very expensive items 
B．is only effective on potential car customers 
C．is the most popular way of pricing a product 
D．is the most effective way of selling low priced products 

A．the buyers search from place to place for desired object 
B．the government selects the best items 
C．the government transacts with an individual 
D．the sellers compete with each other for the bid