In Writing the Expression for the Equilibrium Constant for a Reaction,which

In writing the expression for the equilibrium constant for a reaction,which of the following should not be done?

A) The concentration of products is placed in the numerator.
B) The concentration of reactants is placed in the demoninator.
C) There are terms for liquids,gases and solutions are included but not solids.
D) The coefficients from the chemical reaction are the exponents for the concentration term.
E) All of these are correct and should be observed.