Scarcity can best be defined as a situation in which? 跪求解答,要

Scarcity can best be defined as a situation in which? 跪求解答,要能说明原因.
A) there are no buyers willing to
purchase what sellers have produced. B) there are not enough goods to satisfy all of the buyers' demand.
C) the resources we use to produce
goods and services are limited. D)
there is more than enough money to satisfy consumers' wants.