The electric field E associated with an electromagnetic wave is represented by $E_y = E_0\sin$kx - \omega t$$ Which of the following statements is correct ? (A) The wave is propagating along $+x$-axis. (B) The wave is propagating along $+z$-axis. (C) The magnetic field $\vec{B}$ of the wave is acting along $+y$-axis. (D) The magnetic field $\vec{B}$ of the wave is acting along $-x$-axis.