The Reaction a + B → C Has a ΔG^0'

The reaction A + B → C has a ΔG^0' of −20 kJ/mol at 25°C. Starting under standard conditions, one can predict which of the following?

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