Magnetic pole moment is a vector quantity directed from
A) A magnet of moment M is bent into a semicircle, then its magnetic moment decreases
B) Magnetic moment is directed parallel to axial line from south pole to north pole
The magnetic field lines produced by a bar magnet :
(a) originate from the south pole and end at its north pole
(b) originate from the north pole and end at its each pole
(c) originate from the north pole and end at its south pole
(d) originate from the south pole and end at its west pole