s – t graph of a particle in SHM is as shown in figure. Choose the wrong option.

At A, particle is in mean position. Hence, displacement is zero, acceleration is zero  and velocity is maximum.At B, particle is in extreme position. Hence, displacement is maximum, acceleration  is maximum directed in negative direction and velocity is zero.At C, particle is in mean position. Hence, displacement is zero, acceleration is zero  and velocity is maximum.