The motion of a particle of mass m is given by x = 0 for t < 0 s, x (t) = A sin `4pi` t for 0 < t < (1/4) s (A>0), and x = 0 for t > (1/4) s. which of the following statements is true?/

Options

A. The force at t = (1/8) s on the particle is `-16pi^2` A m.
B. The particle is acted upon by on impulse of magnitude `4pi^2` A m at t = 0 s aand t = (1/4) s.
C. The particle is not acted upon by any force
D. The particle is not acted upon by a constant force.