If $f(x) =2x-3$ and $g(x)=x^2-3x+2$ then $g(f(x))$ is

Question

$\begin{array}{1 1} (a)\;4x^2+18x+20 \\ (b)\;4x^2-18x-20 \\ (c)\;4x^2-18x+20 \\(d)\;4x^2+18x-20 \end{array}$