Assertion (A) : Magnetic field lines cannot start from a point nor end at a point.
Reason (R) : The line integral of magnetic field induction over a closed path is not zero.
(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 the correct explanation of A
(c) A is true but R is false
(d) A is false and R is also false