The Difference Between a Change in Quantity Demanded and a Change

Multiple Choice

The difference between a change in quantity demanded and a change in demand is that a change in:

A) ​quantity demanded is caused by a change in a good's own current price, while a change in demand is caused by a change in some other variable, such as income, tastes, or expectations.
B) ​demand is caused by a change in a good's own current price, while a change in quantity demanded is caused by a change in some other variable, such as income, tastes, or expectations.
C) ​quantity demanded is a change in the amount people actually buy, while a change in demand is a change in the amount they want to buy.
D) ​A change in demand and a change in quantity demanded are the same thing.