Which one of the following statements best describes the nature of the field lines due to a bar magnet

A
Field lines start from the north pole and end on the south pole, Any number of field lines can pass through a point
B
Field lines start from the north pole and end on the south pole. Only one field line passes through a point
C
Field lines are continuous lines passing inside and outside the magnet. Only one field line passes through a point
D
Field lines are continuous lines passing inside and outside the magnet. Any number of field lines can pass through a point

Field lines are closed loops. So, they pass continuously inside and out side the magnet.

Magnetic lines never intersect each other . So, only one field line passes through a point.

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