Assertion `(A) : Fe` is protected from corrosing by connecting `Mg` metal with it.
Reason `(R) : Fe` acts as cathode and `Mg` as anode which gradully disappears.
A. If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`.
B. If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`.
C. If `(A)` is correct, but `(R)` is incorrect.
D. If `(A)` is incorrect, `(R)` is correct.
