Two particles are executing S.H.M. according to the equations `x_1 = 6 sin (10 pi t+ pi/3)` and `x_2 = 6 sin (8 pi t + pi/4)` .Then the phase difference between the first and second particle at `t = 0.5 s ` will be

Options

A. `7 (pi) / 12`
B. `13 (pi) /12`
C. `25 (pi)/12`
D. `(pi)/12`