Percentage yield of ${\text{SO}}_{\text{3}}$ in the following reaction is plotted against pressure at definite

temperatures. ${\text{2SO}}_{\text{2}\left(\text{g}\right)}{\text{\hspace{0.17em}+\hspace{0.17em}O}}_{\text{2}\left(\text{g}\right)}\rightleftharpoons {\text{\hspace{0.17em}2SO}}_{\text{3}\left(\text{g}\right)};$ which of the following reaction is correct?