The reaction $\text{A}\left(\text{g}\right)\text{\hspace{0.17em}+\hspace{0.17em}2B}\left(\text{g}\right)\to \text{\hspace{0.17em}C}\left(\text{g}\right)\text{+\hspace{0.17em}D}\left(\text{g}\right)$is an elementary process. In an experiment   involving this reaction, the initial partial pressure of A and B are ${\text{p}}_{\text{A}}{\text{\hspace{0.17em}=\hspace{0.17em}0.60\hspace{0.17em}atm\hspace{0.17em}and\hspace{0.17em}p}}_{\text{B}}\text{\hspace{0.17em}=\hspace{0.17em}0.80}$  atm respectively. When ${\text{p}}_{\text{C}}\text{\hspace{0.17em}=\hspace{0.17em}0.20}$atm, the rate of the reaction relative to the initial rate is