When the substances in the equation below are at equilibrium, at pressure P and temperature T, the equilibrium can be shifted to favor the products by
CuO(s) + H2(g) H2O(g) + Cu(s) ?Hºrxn = -2.0 kJ/mol

A) increasing the pressure by means of a moving piston at constant T.

B) increasing the pressure by adding an inert gas such as nitrogen.

C) decreasing the temperature.

D) allowing some gases to escape at constant P and T.

E) adding a catalyst.