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: Medicine
[{'content': "A family consist of husband, wife and children wifes's father has huntington's chorea. Which statment is true - \nSelect and explain. \nA. Chance of getting disease in child is 1:4, B. Can occur upto age of 50, C. If wife does not get disease till age 50 children are not affected, D. Huntingion's chorea is due to point mutation in gene", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]