Consider the reaction below： All of the following equilibrium would shift to the left except on

Consider the reaction below：

All of the following equilibrium would shift to the left except one．Which one would not cause the equilibrium to shift to the left？( )

A．decreasing the container volume

B．decreasing the temperature

C．adding a catalyst that accelerate the decomposition of SO₃

D．adding some SO₂

E．removing some SO₃