Unpolarized light of intensity $I_0$ is incident on surface of a block of gass at Brewster's angle. In that case , which one of the following statement is true ?

Question

$\begin{array}{1 1} \text {transmitted light is partially polarized with intensity} \frac{I_0}{2} \\ \text{transmitted light is completely polarized with intensity less than} \frac{I_0}{2} \\\text{reflected light is completely polarized with intensity less than } \frac{I_0}{2} \\\text{reflected light is partially polarized with intensity } \frac{I_0}{2} \end{array} $