Identify the compound $A$ and $B$ in following reaction.

Identify the compound $A$ and $B$ in following reaction.
  1. $\mathrm{A}=$ methylisocyanide, $\mathrm{B}=$ Methanoic acid
  2. $\mathrm{A}=$ Ethanenitrile, $\mathrm{B}=$ Methanoic acid
  3. $\mathrm{A}=$ Ethanenitrile, $\mathrm{B}=$ Ethanoic acid
  4. $\mathrm{A}=$ methyl cyanide, $\mathrm{B}=$ methanoic acid

Asked in: MHT CET 2020 (13 Oct Shift 2)

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