$A$ compound $A$ on reaction with $X$ and $Y$ produces the same major product but different by-products $a$ and $b$. Oxidation of $a$ gives a substance produced by ants.
$X$ and $Y$ respectively are :

• A
  $KMnO_4 / H^{+}$ and dil. $KMnO_4, 273 \ K$
• B
  $KMnO_4$ (dilute),$273 \ K$ and $KMnO_4 / H^{+}$
• C
  $KMnO_4 / H^{+}$ and $O_3, H_2O / Zn$
• D
  $O_3, H_2O / Zn$ and $KMnO_4 / H^{+}$