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
Telomerases are : 
Select and explain. 
A. DNA dependent DNA polymerases, B. Highly active in somatic cells, C. Contain 2-3 oligosaccharide groups, D. Maximum activity in germ cells
D: Maximum activity in germ cells
Answer: D: Maximum activity in germ cells 
Explanation: Telomerases are RNA dependent DNA polymerases (Reverse transcriptases)
Ther are Ribonucleoproteins in nature.
They are active in germ cells and stem cells.