Find the equation of straight line touching both $x^2+y^2=2$ and $y^2=8x$.

Question

$\begin{array}{1 1}(a)\;x\pm y+2=0\\(b)\;x\pm 2y+2=0\\(c)\;x\pm y+3=0\\(d)\;x\pm y+12=0\end{array}$