Which of the following expression is not true ?

Options

A. `[H^(+)]=[OH^(-)]=sqrt(K_(W))` for a neutral solution at all temperatures.
B. `[H^(+)]gtsqrt(K_(W))=[OH^(-)]lt sqrt(K_(W))` for an acidic solution.
C. `[H^(+)]ltsqrt(K_(W))=[OH^(-)]gtsqrt(K_(W))` for an alkaline solution.
D. `[H^(+)]=[OH^(-)]=10^(-7)` for a neutral solution at all temperatures.