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': 'Cystic fibrosis is inherited as an autosomal recessive condition. A normal couple has one daughter affected with the disease. They are now planning to have another child. What is the chance of her sibling being affected by the disease \nSelect and explain. \nA. O, B. 1\\/2, C. 1\\/4, D. 3\\/4', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Robbins basic pathology 9th edition page no 220, heading=disorders of Autosomal recessive inheritance Siblings have one chance in four of being affected. Therefore the chance of the sibling being affected according to the question is 1/4.', 'role': 'assistant'}]