MCQ
The correct stability order of the given canonical structures is


- A$I > II > III$
- ✓$III > I > II$
- C$I > III > II$
- D$II > III > I$

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$X$ (Major product) $\xrightarrow{HN{{O}_{3}}+{{H}_{2}}S{{O}_{4}}}Y$ (Major product) $\xrightarrow{Sn\,\,+\,\,HCl}\,Z\,\xrightarrow[S{{O}_{3}}]{}W$
$W$ is

Assertion $(A)$ : Haloalkanes react with $\mathrm{KCN}$ to form alkyl cyanides as a main product while with $\mathrm{AgCN}$ form isocyanide as the main product.
Reason $(R)$ : $\mathrm{KCN}$ and $\mathrm{AgCN}$ both are highly ionic compounds.
In the light of the above statement, choose the most appropriate answer from the options given below: