The reagent used in the reaction $R-CH_2-CCl_2-R \xrightarrow{\text{Reagent}} R-C \equiv C-R$ is .............

  • A
    $NaNH_2$
  • B
    $HCl / H_2O$
  • C
    $KOH$ in $C_2H_5OH$
  • D
    $Zn$ / alcohol

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