There Are Seven Common Strong Acids $\ge$ 10⁻⁶ M,the PH Is Calculated from the Concentration of the Is

There are seven common strong acids.Which of the following statements is NOT true for strong acids?

A) Dilute solutions are completely ionized.
B) HNO₂ is a strong acid.
C) For strong acid solutions with a concentration between 10⁻⁶ and 10⁻⁸ M,the pH is determined using systematic equilibrium.
D) For strong acid solutions with concentrations $\ge$ 10⁻⁶ M,the pH is calculated from the concentration of the strong acid.
E) For strong acid solutions with concentrations $\le$ 10⁻⁸ M,the pH is always 7.