Which statement about the global sulfur cycle is false?

A) On a time scale of centuries, volcanic eruptions and dust from bare soils each account for approximately the same amount of sulfur that it is emitted into the atmosphere.
B) Sulfur is often a limiting factor for organismal growth.
C) Anthropogenic changes to the sulfur cycle have resulted in an increase in the pH of precipitation.
D) The major global pools are in terrestrial soils.