A Sample of Black Coffee Was Measured to Have [H₃O⁺]

Multiple Choice

A sample of black coffee was measured to have [H₃O⁺] = 7.94 × 10⁻⁶.What is TRUE about this solution?

A) The solution is acidic.
B) The solution contains less hydronium ions than pure water itself.
C) The solution does not contain any OH⁻ions.
D) The solution has [OH⁻] = 7.94 × 10⁻⁶.
E) The pH of the solution is 7.94.