Economic Theory Posits That a Resource Which Is Finite and Being

Multiple Choice

Economic theory posits that a resource which is finite and being depleted will rise in price continuously, and demand will be reduced.In fact, a recent study, graphing the price behavior of lead, zinc and copper found that until about 2007,

A) ​prices rose steadily, as predicted.
B) ​prices dropped precipitously.
C) ​prices remained remarkably stable. 
D) ​prices were up and down with no discernible pattern.