An Agricultural Economist Says That the Correlation Between Corn Prices

An agricultural economist says that the correlation between corn prices and rainfall during the growing season is r = -0.7. This means that:

A) when rainfall is above average, corn prices also tend to be above average.
B) there is almost no relation between rainfall amount and corn prices.
C) when rainfall is above average, corn prices tend to be below average.
D) the economist is confused because correlation makes no sense in this situation.