The motion of a particle executing S.H.M. is given by $\mathrm{x}=0.01\sin 100\mathrm{\pi }(\mathrm{t}+.05)$, where x is in metres and time is in seconds. The time period is 

• A

  0.01 sec

• B

  0.02 sec

• C

  0.1 sec

• D

  0.2 sec