A Particle Undergoes Damped Harmonic Motion

A particle undergoes damped harmonic motion.The spring constant is 100 N/m; the damping constant is 8.0 x 10^-3 kg∙m/s, and the mass is 0.050 kg.If the particle starts at its maximum displacement, x = 1.5 m, at time t = 0, what is the amplitude of the motion at t = 5.0 s?

A) 1.5 m
B) 1.3 m
C) 1.0 m
D) 0.67 m
E) 0.24 m