Assertion (A) It is not necessary that every bar magnet has one North Pole and one South Pole.
Reason (R) Magnetic poles occur in pair.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true, but R is not the correct explanation of A

C. A is true, but R is false

D. A is false, but R is true

Answer: Option D