The `x-t` graph of a particle undergoing simple harmonic motion is shown below. The accelertion of the particle at `t = 4//3 s` is

Options

A. `sqrt3/32 pi^2 cm s^(-2)`
B. `-(pi^2)/32 cm s ^(-2)`
C. `(pi^2)/32 cm s ^(-2)`
D. `-sqrt3/32 pi^2 cm s^(-2)`

Answer

D