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: Radiology
[{'content': 'Sublethal damage to DNA is caused by: \nSelect and explain. \nA. Deterministic effect, B. Stochastic effect, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Comparison of Deterministic and Stochastic effects of radiation (Very important and conceptual topic):', 'role': 'assistant'}]