SHM 相位常數 問題

The equation of the curve is given by, x = A.sin(wt + p)
where A and w are constants, p is the phase angle (相位角)

At t =0, x is -ve
hence, p should be between -pi/2 and 0, i.e. -pi/2 < p < 0

All given options (a), (b) and (c) are not correct.