If $f(x) = 4x+7$ and $g(x) = x^2 + 3$ then $f(g(x))$ is

Question

$\begin{array}{1 1} (a)\; 4x^2 + 19 \\ (b)\; 16x^2 + 56x+16 \\ (c)\; 4x^2+12 \\ (d)\; x^2 + 4x+10 \end{array}$