If $\overrightarrow{E}$ and $\overrightarrow{B}$ represent electric and magnetic field vectors of the electro magnetic wave is along

Question

$\begin{array}{1 1} \overrightarrow{E} \\ \overrightarrow{B} \\ \overrightarrow{B} \times \overrightarrow{E} \\ \overrightarrow{E} \times \overrightarrow{B} \end{array}$