A compound ‘$\mathrm{A}$’ on reaction with ‘$\mathrm{X}$’ and ‘$\mathrm{Y}$’ produces the same major product but different by product '$a$' and '$b^{\prime}$. Oxidation of '$a$' gives a substance produced by ants.
'X' and 'Y' respectively are
$\mathrm{KMnO}_{4} / \mathrm{H}^{+}$ and dil. $\mathrm{KMnO}_{4^{\prime}} \,273 \mathrm{~K}$
$\mathrm{KMnO}_{4}$ (dilute), $273 \mathrm{~K}$ and $\mathrm{KMnO}_{4} / \mathrm{H}^{+}$
$\mathrm{KMnO}_{4} / \mathrm{H}^{+}$ and $\mathrm{O}_{3}, \mathrm{H}_{2} \mathrm{O} / \mathrm{Zn}$
$\mathrm{O}_{3}, \mathrm{H}_{2} \mathrm{O} / \mathrm{Zn}$ and $\mathrm{KMnO}_{4} / \mathrm{H}^{+}$
