The Magnitude of the Magnetic Field Component of a Plane $\omega$

The magnitude of the magnetic field component of a plane polarized electromagnetic wave traveling in vacuum is given by B_y = B_o sin[k z - $\omega$ t]. Which one of the following statements concerning this electromagnetic wave is true?

A) The wavelength is equal to k/ $\omega$ .
B) The wave propagates in the y direction.
C) The wave is polarized in the x direction.
D) The electric field component vibrates in the z direction.
E) The electric field component has a magnitude of E = cB_o cos[k z - $\omega$ t].