In the interval $[0, 3]$,the function $f(x) = |x - 1| + |x - 2|$ is

  • A
    Discontinuous
  • B
    Differentiable
  • C
    Continuous but not differentiable at $x = 2$ only
  • D
    Continuous but not differentiable at $x = 1$ and $x = 2$

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