单项选择题
[听力原文]
Prices determine how resources are to be used. They are also the means by which products and services that are in limited supply are rationed among buyers. The price system of the United States is a very complex network composed of the prices of all the products bought and sold in the economy as well as those of numerous services, including labor, professional, transportation and public-utility services. The interrelationships of all these prices make up the system of prices in which everything seems to depend more or less upon everything else.
If one were to ask a group of randomly selected individuals to define "price," many would reply that price is an amount of money paid by the buyer to the seller of a product or service or, in other words, that price is the money value of a product or service as agreed upon in a market bargaining. This definition is, of course, valid as far as it goes. For a complete understanding of a price in any particular dealing, much more than the amount of money involved must be known. Both the buyer and the seller should be familiar to be exchanged, the time and place at which the exchange will take place and payment will be made, the form of money to be used, the credit terms and discounts that apply to the bargaining, guarantees on the product or service, delivery terms, return privileges, and other factors. In other words, both buyer and seller should be fully aware of all the factors that comprise the total "package" being exchanged for the asked-for amount of money in order that they may evaluate a given price.
A. The exchanging forms in bargaining.
B. The complexities of the price system.
C. The inherent weaknesses of the price system.
D. The relationship between the resource allocation and the price system.