The Price of IPhones™ Is Falling

Multiple Choice

The price of iPhones™ is falling. In a free-market economic system where everything else is equal, the most likely explanation is:

A) suppliers are not producing enough product.
B) sellers cannot keep up with market demand.
C) the government determined that the product was not worth the price tag that the producer was asking.
D) the product has competition at the equilibrium price.