This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Effective polymerase reaction was repeated for 3 cycleson a DNA molecule. What will be the resultingformation of the copies? 
Select and explain. 
A. Double number of copies, B. Three times the number of DNA molecule, C. Four times the number of DNA molecule, D. 8 times
D: 8 times
Answer: D: 8 times 
Explanation: . 8 times