Which of the following changes will temporarily shift the position of the equilibrium in the reverse direction for the reaction: N2 (g) + 3H2
(g)<-----> 2NH3 (g)
a) Increase the concentration of NH3
b) Decrease the concentration of NH3
c) Decrease the concentration of H2
d) Increase the concentration of N2
e) More than one of the choices above would temporarily shift the equilibrium in the reverse direction