For $2S{O}_2+O_2\rightleftharpoons 2S{O}_3, H= –QKJ,$ as per Lechatelier's principle which of the

following changes favors forward reaction yielding more $S{O}_3$?

(A) Adding more $O_2$

(B) Removing $S{O}_3$

(C) Applying high $P$

(D) Change of catalyst