The electric field of a uniform plane electromagnetic wave in free space, along the positive $x$ direction, is given by $\overrightarrow{E}=10(\hat{a}_y+j\hat{a}_z)e^{-j\:25x}$. The frequency and polarization of the wave, respectively, are
1. $1.2\:GHz$ and left circular
2. $4\:Hz$ and left circular
3. $1.2\:GHz$ and right circular
4. $4\:Hz$ and right circular