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
[{'content': 'Enzyme that play a key role in apoptosis is: \nSelect and explain. \nA. Ribonuclease., B. DNAase., C. Caspase., D. Endonuclease.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]