Which of the Following Is Always True for a Reaction $4.97 \times 10^{ - 8}$

Which of the following is always true for a reaction where
K_c is $4.97 \times 10^{ - 8}$ at 25°C?

A) The reaction mixture contains mostly reactants at equilibrium.
B) The reaction mixture contains mostly products at equilibrium.
C) The rate of reaction is very slow.
D) There are approximately equal moles of reactants and products at equilibrium.
E) Both A and C.