The PH of a Solution Is Measured to Be 6

The pH of a solution is measured to be 6.30. What are the values of [H₃O⁺] and [OH^-] for this solution?

A) [H₃O⁺] = 5.0 × 10^-7, [OH^-] = 2.0 × 10^-8
B) [H₃O⁺] = 6.3 × 10^-7, [OH^-] = 7.7 × 10^?8
C) [H₃O⁺] = 2.0 × 10⁶, [OH^-] = 5.0 × 10⁷
D) [H₃O⁺] = 2.0 × 10^-8, [OH^-] = 5.0 × 10^-7
E) [H₃O⁺] = 1.6 × 10^-1, [OH^?] = 1.3 × 10^-1