Chemistry · Structure of atom

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Unlike sound waves, electromagnetic waves do not require a medium and can move in vacuum. Reason (R): Electromagnetic waves are composed of oscillating electric and magnetic fields perpendicular to each other and to the direction of propagation. In the light of the above statements, choose the correct answer from the options given below:

1. A
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B
   Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. C
   (A) is true but (R) is false.
4. D
   (A) is false but (R) is true.