Question
Which amongst the following reactions of alkyl halides produces isonitrile as a major product?
(A) $\mathrm{R-X+HCN\to}$
(B) $\mathrm{R-X+AgCN\to}$
(C) $\mathrm{R-X+KCN\to}$
(D) $$\mathrm{R-X+NaCN\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{{C_2}{H_5}OH}^{{H_2}O}}}$$
Choose the most appropriate answer from the options given below: