Because you understand the law of supply, you can deduce that the correct graphical representation of the supply for cds must

S1

Explanation:

Law of Supply, is the law which states or claims that all else being constant or equal, then the quantity supplied of the good increases when the price of the goods also increases.

Ans this states the positive relationship among the price and the quantity, thus an upward sloping curve. Therefore, it is the curve (supply curve), which is more likely for the CDs.

This curve shows the relationship among the amount that the sellers willing to and able to supply and the price of the CDs, which is called as the quantity of CDs supplied.