The correct statements regarding the lines of force of the magnetic field B are
(1) Magnetic intensity is a measure of lines of force passing through unit area held normal to it
(2) Magnetic lines of force form a closed curve
(3) Due to a magnet magnetic lines of force never cut each other
(4) Inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole

Options

A. 1,2 and 3 are correct
B. 1 and 2 are correct
C. 2 and 4 are correct
D. 1 and 3 are correct

Answer

A