Let $f(x)=x^2-4x+2$ and $g(x)=6-x$ what is $f(g(x))$?

Question

$\begin{array}{1 1} (a)\;x^2+8x-14 \\ (b)\;x^2-8x-14 \\ (c)\;x^2+8x+14 \\(d)\;x^2-8x+14 \end{array} $