Which of the following statements is correct?

  • A
    The hydroxide of aluminum is more acidic than the hydroxide of boron.
  • B
    The hydroxide of boron is basic,while that of aluminum is amphoteric.
  • C
    The hydroxide of boron is acidic,while that of aluminum is amphoteric.
  • D
    The hydroxides of $B$ and $Al$ are both amphoteric.

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Which of the following statements is incorrect?

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