In which of the following arrangements is the given sequence not strictly according to the property indicated against it?

• A
  $HF < HCl < HBr < HI$ : increasing acidic strength
• B
  $H_2O < H_2S < H_2Se < H_2Te$ : increasing $pK_a$ values
• C
  $NH_3 < PH_3 < AsH_3 < SbH_3$ : increasing acidic character
• D
  $CO_2 < SiO_2 < SnO_2 < PbO_2$ : increasing oxidising power