In the Oceans,sulfur Exists Primarily as ________,And in Rocks and Sediments

Multiple Choice

In the oceans,sulfur exists primarily as ________,and in rocks and sediments sulfur occurs mostly as ________ and ________.

A) hydrogen sulfide (H₂S) / gypsum (CaSO₄) / elemental sulfur (Sᵒ)
B) hydrogen sulfide (H₂S) / sulfate (SO₄²⁻) / elemental sulfur (Sᵒ)
C) sulfate (SO₄²⁻) / gypsum (CaSO₄) / pyrite (FeS₂)
D) sulfate (SO₄²⁻) / sulfide (H₂S) / elemental sulfur (Sᵒ)