Suppose That in 2008, Ford Sold 500,000 Mustangs at an Average

Suppose that in 2008, Ford sold 500,000 Mustangs at an average price of $18,800 per car; in 2009, 600,000 Mustangs were sold at an average price of $22,500 per car. These statements:

A) suggest that the demand for Mustangs decreased between 2008 and 2009.
B) suggest that the supply of Mustangs must have increased between 2008 and 2009.
C) suggest that the demand for Mustangs increased between 2008 and 2009.
D) constitute an exception to the law of demand in that they suggest an upsloping demand curve.