Which One of the Following Statements Concerning Soil Erosion Is

Which one of the following statements concerning soil erosion is false?

A) Grasses and other vegetation, windbreaks, and contour cropping will help reduce losses of soil from cultivated lands.
B) Soils form naturally by weathering; if protected from erosion, sound management can maintain or enhance their nutrient levels and textural characteristics.
C) Sheet erosion, rills, and gullies develop mainly during prolonged droughts.
D) Rates of soil erosion exceed rates of soil formation in some parts of the world.