Which of the Following Is a Difference Between a Change

Which of the following is a difference between a change in quantity demanded and a change in demand?

A) A change in 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) A change in 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) A change in 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 quantity demanded of a good is caused by a change in the availability of the good, while a change in demand is caused by a change in the price of the good.
E) A change in quantity demanded is illustrated by a shift in the demand curve, while a change in demand is illustrated by a movement along the given demand curve.