If $f(x) = \begin{cases} x^2 \sin \frac{1}{x}, & x \neq 0 \\ 0, & x = 0 \end{cases}$,then

  • A
    $f(0 + 0) = 1$
  • B
    $f(0 - 0) = 1$
  • C
    $f$ is continuous at $x = 0$
  • D
    None of these

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