This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, 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: Color Blindness is the inability to distinguish the difference between some colors. It is the result of an absence of color sensitive pigment in the cone cells of the retina. Color Blindness is passed down on the X chromosome.', 'role': 'assistant'}]