Which of the Following Statements Regarding the Mass Action Expression

Which of the following statements regarding the mass action expression and the equilibrium constant expression is NOT true?

A) The mass action expression is usually applied to systems that have not attained equilibrium.
B) The mass action expression and the equilibrium constant expression have the same mathematical form.
C) The mass action expression never has the same value as the equilibrium constant expression.
D) There are infinitely many values for the mass action expression at a given temperature.
E) There is only one value of the equilibrium constant expression at a given temperature.