Answer the following True or False:

If f(x)\displaystyle {f{{\left({x}\right)}}} is a differentiable function such that f(5)=0\displaystyle {f}'{\left({5}\right)}={0}, then f(x)\displaystyle {f{{\left({x}\right)}}} either has a relative minimum at x=5\displaystyle {x}={5} or a relative maximum at x=5\displaystyle {x}={5}.