To an Economist, Scarcity Means That

To an economist, scarcity means that:

A) it is very time-consuming to find a good.
B) at a zero price, the available quantity of a good is insufficient to meet people's wants.
C) a good is unavailable even at very high prices.
D) at the current market price, the amount available is less than the amount that people want and are willing to pay for.
E) resources are unlimited but people's desires are limited.