The Market Price of Apples Is Currently Rising

The market price of apples is currently rising.In a free-market economy,the most likely explanation of this price change is that:

A) there is a shortage in the market for apples.
B) the supply of money has decreased.
C) the equilibrium price is lower than the market price.
D) the government has decided to set a higher price so that the firms in the market make an adequate profit.