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': 'Normal female, whose father was color blind married a normal man. What are the chances of color blindness in son ? \nSelect and explain. \nA. 25%, B. 50%, C. 75%, D. No chance', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is'b' i.e., 50%", 'role': 'assistant'}]