If $f(x) = \begin{cases} \frac{x^2}{a} - a, & x < a \\ 0, & x = a \\ a - \frac{x^2}{a}, & x > a \end{cases}$ then:

  • A
    $\lim_{x \to a} f(x) = a$
  • B
    $f(x)$ is continuous at $x = a$
  • C
    $f(x)$ is discontinuous at $x = a$
  • D
    None of these

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