Types of Discontinuities in Rational Functions

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For the function $h(x) = \frac{x^2 - 9}{x^2 - 2x - 3}$ , which of the following statements best describes the discontinuity at $x = 3$ ?

There is a vertical asymptote at $\displaystyle x = 3$

There is a removable discontinuity (hole) at $\displaystyle x = 3$

$\displaystyle \lim_{x \to 3} h(x) = \infty$

The function is continuous at $\displaystyle x = 3$

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