Diamagnetic Substances

Assertion (A): If one arm of a U- tube containing a dia magnetic solution is placed in between the poles of a strong magnet with the level in line withh the field, the level of the solution falls, Reason (R ): Diamagnetic substances are

Show diagrammatically the behaviour of magnetic field lines in the presence of : (i) Paramagnetic and (ii) Diamagnetic substance, How does one explain this distinguishing feature ?