The given figure shows the cloning vector $pBR322$. Identify the labels $A, B, C,$ and $D$ correctly.

• A
  $A \to \text{Hind III}, B \to \text{EcoR I}, C \to \text{amp}^R, D \to \text{ori}$
• B
  $A \to \text{Hind III}, B \to \text{Bam HI}, C \to \text{kan}^R, D \to \text{amp}^R$
• C
  $A \to \text{Bam HI}, B \to \text{Pst I}, C \to \text{ori}, D \to \text{amp}^R$
• D
  $A \to \text{EcoR I}, B \to \text{Bam HI}, C \to \text{amp}^R, D \to \text{ori}$