Distance between two parallel planes $2x + y +2z = 8$ and $4x + 2y + 4z + 5 = 0$ is :

Question

$\begin{array}{1 1} (1) \large\frac{3}{2} \\ (2) \large\frac{5}{2} \\ (3)\large\frac{7}{2} \\(4) \large\frac{9}{2} \end {array}$