If a sinusoidal electromagnetic wave with intensity $19$ W$/$m$2$W$/$m$2$ has an electric field of amplitude EE$,$ then a $38$ W$/$m$2$W$/$m$2$ wave of the same wavelength will have an electric field of amplitude

$4$E$4$E $\mathrm{.}22$E$22$E$\mathrm{.}2$E$2$E$\mathrm{.}2$E$2$E$.$