Which of the following chemicals are used to manufacture methyl isocyanate that caused ''Bhopal Tragedy''

$(i)$ Methylamine       $(ii)$ Phosgene

$(iii)$Phosphine           $(iv)$ Dimethylamine

  • A$(i)$ and $(iii)$
  • B$(iii)$ and $(iv)$
  • C$(i)$ and $(ii)$
  • D$(ii)$ and $(iv)$
AIIMS 2005, Difficult
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