During a January Storm in Vermont,a Highway Truck Crashes and Spills

During a January storm in Vermont,a highway truck crashes and spills 3 tons of rock salt onto the side of the road,covering grasses and tumbling down to a creek.Learning about this accident,you wonder about the environmental consequences.This sort of salt naturally occurs in the soil.According to the U.S.Environmental Protection Agency's definition of pollution,this spill would be considered as a

A) nontoxic,non-polluting spill of a natural substance.
B) pollutant that should be cleaned up as much as possible.
C) nutrient supplement,and no environmental harm is expected.
D) problem better suited for the CDC.