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: Social & Preventive Medicine
[{'content': '1 degree of freedom in chi – square test, the value of x2 for a probability of 0.05 is \nSelect and explain. \nA. 0.45, B. 2.41, C. 4.34, D. 3.84', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]