The correct option is D One cation and one anion
The tendency for heterolytic cleavage is determined by the electronegativity difference between the atoms joined by the bond.
In C−Cl there is much electronegative difference between C & Cl and hence C−Cl bond will undergoes heterolytic cleavage.
C−ClHeterolytic−−−−−−−→bond fissionC+Cation+Cl−Anion∣∣∣