Identify the correct properties of magnetic field lines.

(A) Magnetic field lines are directed from the south pole to the north pole outside the magnet.
(B) The magnetic field lines never intersect each other.
(C) Magnetic lines always form a closed and continuous curve.
(D) If magnetic field lines are parallel, then the magnetic field must be uniform throughout.

Choose the correct answer from the options given below:

(B) and (C) only

The correct answer is Option (4) → (B) and (C) only

Correct statements: (B) and (C)

Explanation:

(A) Incorrect: Outside the magnet, magnetic field lines go from the north pole to the south pole, not from south to north.

(B) Correct: Magnetic field lines never intersect each other because the direction of the field at a point is unique.

(C) Correct: Magnetic field lines always form closed and continuous loops — they travel from north to south outside the magnet and from south to north inside the magnet.

(D) Incorrect: Parallel magnetic field lines indicate uniformity, but this condition is not always true for all magnetic fields, so it cannot be taken as a general property.