Assertion (A): Sodium, calcium and magnesium are obtained by the
electrolysis of their molten oxides.
Reason (R): These metals have more affinity for oxygen than carbon.
a. Both the Assertion and the Reason are true, and the Reason is the correct explanation for the Assertion.
b. Both the Assertion and the Reason are true, but the Reason is not the correct explanation for the Assertion.
c. The Assertion is true, but the Reason is false.
d. Both the Assertion and the Reason are false.