Correctly match the List-$I$ with List-$II$:
List-$I$ List-$II$
$(P) \ [M(CN)_2]^-$ $(1) \ Ni$ (during refining of metal)
$(Q) \ [M(CO)_4]$ $(2) \ Ti$ (during refining of metal)
$(R) \ MI_4$ $(3) \ Pb$ (during roasting of ore)
$(S) \ MO$ $(4) \ Ag$ (during leaching of ore)

  • A
    $P-4, Q-1, R-2, S-3$
  • B
    $P-4, Q-2, R-1, S-3$
  • C
    $P-3, Q-1, R-2, S-4$
  • D
    $P-1, Q-2, R-4, S-3$

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