Assertion : Friction always opposes the motion.
Reason : Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
Mark the correct choice as
(a) If both assertion and reason are true and reason is the correct explanation of the assertion.
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c) Assertion is true, but reason is false.
(d) Assertion is false, but reason is true.
