Which of the following statements is true?

  • A
    $HClO_4$ is a weaker acid than $HClO_3$
  • B
    $HNO_3$ is a stronger acid than $HNO_2$
  • C
    $H_3PO_3$ is a stronger acid than $H_2SO_3$
  • D
    In aqueous medium $HF$ is a stronger acid than $HCl$

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