Which of the following tools of recombinant $\text{DNA}$ technology is incorrectly paired with its use?

• A
  Restriction enzyme $-$ Production of blunt ends
• B
  $\text{DNA}$ ligase $-$ Creates sticky ends of restriction fragments
• C
  $\text{DNA}$ polymerase $-$ used in a $\text{PCR}$ to amplify section of $\text{DNA}$
• D
  Reverse transcriptase $-$ Production of $\text{cDNA}$ from $\text{mRNA}$