The Reaction a + B $\rightarrow$ C Has A $\Delta$ G'° of -20 KJ/mol at 25° C

The reaction A + B $\rightarrow$ C has a $\Delta$ G'° of -20 kJ/mol at 25° C. Starting under standard conditions, one can predict that:

A) at equilibrium, the concentration of B will exceed the concentration of A.
B) at equilibrium, the concentration of C will be less than the concentration of A.
C) at equilibrium, the concentration of C will be much greater than the concentration of A or B.
D) C will rapidly break down to A + B.
E) when A and B are mixed, the reaction will proceed rapidly toward formation of C.