Let $f(x) = \begin{cases} x+1, & -1 \leq x \leq 0 \\ -x, & 0 < x \leq 1 \end{cases}$. Which of the following statements is true?

  • A
    $f(x)$ is discontinuous in $[-1,1]$ and so has no maximum value or minimum value in $[-1,1]$
  • B
    $f(x)$ is continuous in $[-1,1]$ and so has maximum value and minimum value
  • C
    $f(x)$ is discontinuous in $[-1,1]$ but still has the maximum and minimum value
  • D
    $f(x)$ is bounded in $[-1,1]$ and does not attain maximum or minimum value

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