Answer the following True or False:

If $\displaystyle {f{{\left({x}\right)}}}$ is a differentiable function such that $\displaystyle {f}'{\left(-{4}\right)}={0}$, then $\displaystyle {f{{\left({x}\right)}}}$ either has a relative minimum at $\displaystyle {x}=-{4}$ or a relative maximum at $\displaystyle {x}=-{4}$.