Assertion: Decrease in mechanical energy is more in case of an object sliding up a relatively less inclined plane due to friction.
Reason: The coefficient of friction between the block and the surface decreases with the increase in the angle of inclination.
Options:
(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 and R is also false.