(A) : A bullet is fired from a rifle. If the rifle recoils freely, the kinetic energy of rifle is less than that of the bullet.
(r) : In the case of rifle bullet system the law of conservation of momentum valid.

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the
C. (A) is true but ( R) is false
D. Both (A) and (R ) are false

Answer

A