Match each item in Column $I$ with one in Column $II$ and select the correct match from the codes given:

Column $I$	Column $II$
$A$. Vocal Sac	$P$. Sexual dimorphism
$B$. In hibernation, frog respires	$R$. Through skin
$C$. Renal portal system	$U$. Joins kidneys and lower parts of body
$D$. Bidder's canal	$X$. Receives sperm from vasa efferentia

• A
  $A \rightarrow P, B \rightarrow R, C \rightarrow X, D \rightarrow W$
• B
  $A \rightarrow P, B \rightarrow R, C \rightarrow U, D \rightarrow X$
• C
  $A \rightarrow R, B \rightarrow P, C \rightarrow T, D \rightarrow X$
• D
  $A \rightarrow Q, B \rightarrow S, C \rightarrow T, D \rightarrow W$