The Difference Between a Change in Quantity Supplied and a Change

Multiple Choice

The difference between a change in quantity supplied and a change in supply is that a change in:

A) ​quantity supplied is caused by a change in a good's own, current price, while a change in supply is caused by a change in some other variable, such as input prices, prices of related goods, expectations, or taxes.
B) ​supply is caused by a change in a good's own, current price, while a change in the quantity supplied is caused by a change in some other variable, such as input prices, prices of related goods, expectations, or taxes.
C) ​quantity supplied is a change in the amount people want to sell, while a change in supply is a change in the amount they actually sell.
D) ​supply and a change in the quantity supplied are the same thing.