આપેલ આકૃતિ ક્લોનિંગ વેક્ટર $pBR322$ દર્શાવે છે. $A, B, C$ અને $D$ લેબલ્સને યોગ્ય રીતે ઓળખો.

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