Match Column $A$ (layers in the ionosphere for skywave propagation) with Column $B$ (their height range).
Column $A$Column $B$
$A$. $D$-layer$I$. $250-400 \ km$
$B$. $E$-layer$II$. $170-190 \ km$
$C$. $F_1$-layer$III$. $95-120 \ km$
$D$. $F_2$-layer$IV$. $65-75 \ km$

  • A
    $A-IV, B-III, C-II, D-I$
  • B
    $A-I, B-II, C-III, D-IV$
  • C
    $A-IV, B-III, C-I, D-II$
  • D
    $A-III, B-IV, C-I, D-II$

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