The difference between change in supply and change in quantity supplied is as follows: (1) The change in quantity supplied is caused just by the change in the price of good, whereas a change in supply takes place whenever the ceteris paribus supposition is violated. (2) The change in quantity supplied is the movement all along a given supply curve, whereas the change in supply is a shift of whole curve. (3) The quantity supplied is recognized by the price, whereas supply reflects the combination of price and quantities. (4) All of above.
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