Match the reaction mixture in Column I with a product in Column II. Column I: (P) bauxite with hot conc. NaOH(aq), (Q) argentite with NaCN(aq) and air, (R) cuprite with dilute $\mathrm{H}{}_2\mathrm{SO}{}_4$ and air, (S) alumina fused with $\mathrm{Na}{}_2\mathrm{CO}{}_3$. Column II: (1) $\mathrm{Na}[\mathrm{Al}(\mathrm{OH}){}_4]$, (2) $\mathrm{Na}[\mathrm{Ag}(\mathrm{CN}){}_2]$, (3) $\mathrm{CuSO}{}_4$, (4) $\mathrm{NaAlO}{}_2$.

1. AP-1, Q-3, R-2, S-4
2. BP-4, Q-2, R-3, S-1
3. CP-1, Q-2, R-3, S-4
4. DP-1, Q-2, R-4, S-3