Match the extraction processes listed in column I with metals...

Column I Column II (A) Self reduction \left[$\begin{array}{c}P \text{ - Lead } \\ R \text{ - Copper }\end{array}$\right]\begin{aligned}& \text{ i.e., }A \rightleftarrows P \text{ and }R \\ & \text{ In lead metal }\\ & \qquad\left\{\begin{\text{ array }}{c} 2 \mathrm{PbS}+3 \mathrm{O}}_{2} \longrightarrow 2 \mathrm{PbO}+2 \mathrm{SO}}_{2} \\ 2 \mathrm{PbO}+\mathrm{PbS} \longrightarrow3 \mathrm{ Pb}+\mathrm{SO}_{2} \end{array}\right. \end{aligned}$(self reduction) In copper metal$\begin{aligned}& 2 \mathrm{Cu}}_{2} \mathrm{ S}+3 \mathrm{O}_{2} \longrightarrow 2 \mathrm{Cu}}_{2} \mathrm{O}+2 \mathrm{SO}_{2} \\ & \mathrm{Cu}}_{2} \mathrm{ S}+2 \mathrm{Cu}_{2} \mathrm{O} \longrightarrow6 \mathrm{Cu}+\mathrm{SO}}_{2} \end{aligned}$(self reduction) (B) Carbon reduction$ P$-lead$$\begin{aligned} & \text{ i.e., } \mathrm{B}-\mathrm{P}\\ & \text{ In lead metal }\\ & \qquad \mathrm{PbO}+\mathrm{C} \longrightarrow \mathrm{Pb}+\mathrm{CO}\\ & \mathrm{PbO}+\mathrm{CO} \longrightarrow \mathrm{Pb}+\mathrm{CO}_{2} \end{aligned}$$Carbon reduction process is used for the reduction of oxides of electropositive metals like \mathrm{Fe}, \mathrm{Pb} etc. This reduction is carried out with coal or coke on strongly heating. (C) Complex formation and displacement by metal. i.e.,$ C-Q$(silver) In silver metal Argentite mineral of \mathrm{Ag}$\left(\mathrm{Ag}}_{2}\mathrm{ S}\right)$is treated with$0.7 \% \mathrm{NaCN} solution in presence of air, therefore firstly sodium argento cyanide complex is formed which on heating with zinc metal, therefore by displacement silver is isolated. $$\begin{aligned}& \mathrm{Ag}_2 \mathrm{ S}+4 \mathrm{NaCN} \longrightarrow2 \mathrm{Na}\left[\mathrm{Ag}(\mathrm{CN})_2\right]+ \mathrm{Na}_2 \mathrm{ S}\\ & 2 \mathrm{Na}\left[\mathrm{Ag}(\mathrm{CN})_2\right]+ \mathrm{Zn} \longrightarrow \mathrm{Na}\left[\mathrm{Zn}(\mathrm{CN})_4\right]+\underset{\text{ Soluble }}{2 \mathrm{Ag}} \downarrow \end{aligned}$$ (D) Decomposition of iodide-(S) Boron \text{ i.e., }(D)-(S) By decomposition of iodide boron metal is isolated.