The function $f(x) = \frac{x^2 - 1}{x^3 - 1}$ is not defined at $x = 1$. If the function is continuous at $x = 1$,then the value of $f(1)$ will be:

  • A
    $-\frac{3}{2}$
  • B
    $\frac{2}{3}$
  • C
    $\frac{3}{2}$
  • D
    $-\frac{2}{3}$

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