Assertion: LiCl is covalent whereas NaCl is ionic .
Reason: Greater the size of the cation ,greater is its polarising power.
(a) If both A & R are correct and R is the correct explanation of the assertion.
(b) If both A & R are correct but R is not the correct explanation of the assertion.
(c) If A is correct ,but R is incorrect
(d) If both A & R are incorrect