Given that $y=A\sin \left[\left(\frac{2\pi }{\lambda }(ct-x)\right)\right]$ where y and x are measured in meters. Which of the following statements is true?

• A

  The unit of $\lambda$ is same as that of x and A

• B

  The unit of $\lambda$ is same as that of x $\mid$ but not of A

• C

  The unit of C is same as that of $\frac{2\pi }{\lambda }$

• D

  The unit of (c t-x) is same as that of $\frac{2\pi }{\lambda }$