Which One, A-D, Is Not Related to the Water Autoionization $\leftrightarrows$

Multiple Choice

Which one, A-D, is not related to the water autoionization constant, K_w? If all are related,
Respond E.

A) [H₃O⁺] [OH^-]
B) 1.0 *10^-14 at 25°C
C) 2 H₂O $\leftrightarrows$ H₃O⁺ + OH^-
D) pH = 7 at 25°C
E) A-D are all related to K_w.