Answer:
Option A
Step-by-step explanation:
First let's make see the what is the difference (they are not the same thing.) And then lets analize which statement is the most accurate.
A change in supply and a change in quantity supplied are different things. The change in supply is caused by changes in costs and incentives that change how much a producer can and will produce at a given price.
The change in quantiy supplied is caused simply by a change in the retail price of the product.
The change in quantity supplied is shown as a movement along the curve. While the change in supply is shown graphically as a movement of the supply curve.
As we can see, that means that A is the correct answer.