Two particles are executing S.H.M. The equation of their motion are ${\mathrm{y}}_1=10\sin \left(\mathrm{\omega }\mathrm{t}+\frac{\mathrm{\pi T}}{4}\right),$ ${\mathrm{y}}_2=25\sin \left(\mathrm{\omega }\mathrm{t}+\frac{\sqrt{3}\mathrm{\pi T}}{4}\right)$ . What is the ratio of their amplitude 

• A

  1 : 1

• B

  2 : 5

• C

  1 : 2

• D

  None of these