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': 'Which of the following has a Direct role in Apoptosis. \nSelect and explain. \nA. NO, B. Adenyl cyclise, C. C AMP, D. Cytochrome C', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cytochrome C', 'role': 'assistant'}]