QuestionWhat is true about the function $f(x)=-\frac{1}{x-3}$ as $x \rightarrow \infty$ ? a) $f(x)$ is undefined b) $f(x) \rightarrow 0$ from below c) $f(x) \rightarrow 0$ from above d) $f(x) \rightarrow \frac{1}{3}$