Assertion : Magnesium is extracted by the electrolysis of fused mixture of MgCl2, NaCl and CaCl2.
Reason: Calcium chloride acts as a reducing agent.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false