Given that $\mathrm{y}=\mathrm{asin}\mathrm{\omega t}+\mathrm{bt}+{\mathrm{ct}}^2\cos \mathrm{\omega t}$. The unit of abc is same as that of

• A

  y

• B

  y/t

• C

  (y/t)²

• D

  (y/t)³