Gypsum Is the Most Widely Used Chemical for the Reclamation

Gypsum is the most widely used chemical for the reclamation of sodic soils.What characteristic likely accounts for this popularity?

A) Gypsum is abundant and low priced.
B) Gypsum is quite insoluble so it remains in the soil for long periods of time.
C) Gypsum provides sulfates that attract Na⁺ from the exchange complex.
D) Gypsum forms sulfuric acid that helps reduce the soil pH.
E) Gypsum reacts with Na+ ions to form insoluble Na₂SO₄.