Which of the following statements about a bar magnet is correct?

A.

iron fillings cling uniformly along the length of a bar magnet

B.

the magnetic properties are more pronounced at the middle of a magnet

C.

it is impossible to have the same poles at the end of a magnet

D.

the magnetic properties are more pronounced at points near the end of the bar

Correct answer is D

No explanation has been provided for this answer.