According to the passage, the "wasteland" (Line 5, Para. 1) refers to______.,

A．by fixing prices in specific industries
B．by means of money and the price mechanism
C．by keeping a watchful eye on relative price changes
D．by direct intervention in the pricing of goods and services

A．different from sciences such as medicine
B．similar to other social sciences because it is imprecise
C．similar to other social sciences because a lot of nonsense is talked about it
D．different from social sciences which try to forecast the way people behave