Since Their Introduction, Prices of Blu-Ray Players Have Fallen and the Quantity

Since their introduction, prices of Blu-ray players have fallen and the quantity purchased has increased. This statement

A) suggests that the supply of Blu-ray players has increased.
B) suggests that the demand for Blu-ray players has increased.
C) constitutes an exception to the law of demand in that they suggest an upward-sloping demand curve.
D) constitutes an exception to the law of supply in that they suggest a downward-sloping supply curve.