$A$ magnetic field vector in an electromagnetic wave is represented by $\vec{B} = B_0 \sin(2\pi vt - \frac{2\pi x}{\lambda}) \hat{j}$. Its associated electric field vector is . . . . . . .

• A
  $\vec{E} = -v\lambda B_0 \sin(2\pi vt - \frac{2\pi x}{\lambda}) \hat{k}$
• B
  $\vec{E} = -v B_0 \sin(2\pi vt - \frac{2\pi x}{\lambda}) \hat{i}$
• C
  $\vec{E} = v\lambda B_0 \sin(2\pi vt - \frac{2\pi x}{\lambda}) \hat{k}$
• D
  $\vec{E} = v B_0 \sin(2\pi vt - \frac{2\pi x}{\lambda}) \hat{i}$