Force is a rate of change of momentum.\\\\(Force\\\\) is measured as \\\\(rate\\ of\\ change\\ of\\ momentum.\\\\) It is not equal to change of momentum.\\\\(F=\\dfrac{dM}{dt}\\\\) or, \\\\(F\\cdot dt=dM\\\\)Impuse of force, \\\\(J=F\\cdot dt=dM\\\\)Hence, Change in momentum and impulsive force are numerically equal.A is wrong and B is correct.