If the Equilibrium Constant for the Reaction A→ B Is

If the equilibrium constant for the reaction A→ B is 0.5 and the initial concentration of A is 25 mM and of B is 12.5 mM,then the reaction:

A) will proceed in the direction it is written,producing a net increase in the concentration of B.
B) will produce energy,which can be used to drive ATP synthesis.
C) will proceed in the reverse direction,producing a net increase in the concentration of A.
D) is at equilibrium.