Question: The compounds $A$ and $B$ in the following reaction are, respectively:
$\mathrm{A}=$ Benzyl alcohol, $\mathrm{B}=$ Benzyl isocyanide
$\mathrm{A}=$ Benzyl alcohol, $\mathrm{B}=$ Benzyl cyanide
$\mathrm{A}=$ Benzyl chloride, $\mathrm{B}=$ Benzyl cyanide
$\mathrm{A}=$ Benzyl chloride, $\mathrm{B}=$ Benzyl isocyanide
Correct Option: 4,
Solution: