A) there are no H⁺ ions in the water. B) this is a solution of pure water. C) the concentration of H⁺ ions in the water equals the concentration of OH⁻ ions in the water. D) this is a solution of pure water, and the concentration of H⁺ ions in the water is 10⁻⁷ M. E) this is a solution of pure water, and the concentration of H⁺ ions equals the concentration of OH⁻ ions in the water.