Let $f(x)=x^{4}10x^{3}36x^{2}12x2.$ For what value$($s$)$ of $x$ does $f(x)$ have a point of inflection?

$x=-3$ only

$x=-2$ only

both $x=-3$ and $x=-2$

$x=-1$

$x=-0\mathrm{.}18$

All of the Above

None of the Above