The function $f(x) = x^3 - 4x^2 + 4x + 3$ defined on $[-1, 3]$ has

  • A
    minimum value $-6$ at $x = -1$
  • B
    minimum value $6$ at $x = 3$
  • C
    minimum value $3$ at $x = 2$
  • D
    maximum value $9$ at $x = 3$

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