From the Statements Below, What Is the Best Description of Chemiosmosis

From the statements below, what is the best description of chemiosmosis?

A) Conversion of potential energy stored in H⁺ ion gradient into reduced NADH and FADH₂.
B) Conversion of potential energy stored in H⁺ ion gradient into ATP as H⁺ diffuses across a membrane.
C) Conversion of kinetic energy stored in H⁺ ion gradient into oxidized NAD⁺ and FAD.
D) Conversion of kinetic energy stored in H⁺ ion gradient into H₂O and ATP.