Answer: Option (d) is correct.
Step-by-step explanation:
There is a fall in the price of DVD players because of the fall in the cost of production of DVD players. Changes in the cost of production is one of the determinant of supply. So, if there is any changes occur in the production cost will lead to shift the supply curve.
Suppose there is a fall in the cost of production of DVD players then as a result supply curve will shift rightwards because producing DVD become more profitable for the firms. This fall in the cost of production will also reduced the prices of DVD players.