Which of the following reactions represents the Wolff-Kishner reduction?

  • A
    $RCOCl \xrightarrow[Pd-BaSO_4]{H_2} RCHO + HCl$
  • B
    $RCN \xrightarrow[H_3O^+]{SnCl_2, HCl} RCHO + NH_4Cl$
  • C
    $RCHO \xrightarrow[\Delta]{Zn-Hg, \text{conc. } HCl} RCH_3 + H_2O$
  • D
    $RCOR' \xrightarrow[\text{ii) } KOH, HO(CH_2)_2OH]{\text{i) } H_2N-NH_2} RCH_2R'$

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