Assertion: In an elasticcollision of two billard balls, the total `KE` is conservation during the short times of collision of the balls`(i.e., when they are in constant).
Reason: Energy spend against friction does not follow the law of conservation of energy.
A. If both Statement- I and Statement- II are true, and Statement - II is the correct explanation of Statement– I.
B. If both Statement - I and Statement - II are true but Statement - II is not the correct explanation of Statement – I
C. If Statement - I is true but Statement - II is false.
D. If Statement - I is false but Statement - II is true