This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Techniques in molecular biology, Subject name: Biochemistry
Enzyme used for cDNA synthesis is 
Select and explain. 
A. DNA dependent RNA polymerase, B. DNA dependent DNA polymerase, C. RNA dependent RNA polymerase, D. RNA dependent DNA polymerase
D: RNA dependent DNA polymerase
Answer: D: RNA dependent DNA polymerase 
Explanation: Complementary DNA (cDNA) DNA that is complementary to RNA Reverse transcriptase (RNA dependent DNA polymerase) is used for the synthesis