If a demand curve for a good were completely vertical, it would be considered

A) perfectly elastic.
B) perfectly inelastic.
C) of unitary elasticity.
D) relatively inelastic.

Perfectly Inelastic

A situation where the demand or supply for a good does not change in response to changes in price.

Demand Curve

A graph that shows the relationship between the quantity of a good demanded and its price.

Completely Vertical

In economics, this can refer to a supply curve that is perfectly vertical, indicating that the quantity supplied is completely unresponsive to changes in price.