A Chemist Is Planning to Study a Chemical Equilibrium for Which

A chemist is planning to study a chemical equilibrium for which no measured explicit thermodynamic values are available. However, the reaction involves common chemical species. What information could a chemist use to make predictions about the equilibrium?

A) equilibrium constants for the equilibrium reactions that can be combined to make the new equilibrium
B) $\Delta$ $G _ { f } ^ { \circ }$ Values for the reactants and products of the new reaction)
C) $\Delta$ H_f and S° values for the reactants and products of the new reaction)
D) All of the above.