This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Genetics, Subject name: Biochemistry
[{'content': 'Which enzymatic mutation is responsible for immortality of cancer cells: \nSelect and explain. \nA. DNA reverse transcriptase, B. RNA polymerase, C. Telomerase, D. DNA polymerase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Telomerase(Ref: Robbins 9/e page 288)Telomerase is one of several factors that contribute to the endless replicative capacity (the immortalization) of cancer cells.', 'role': 'assistant'}]