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': 'Inheritance pattern of ABO blood group system is - \nSelect and explain. \nA. Pseudodominance, B. Autosomal dominant, C. Autosomal recessive, D. Codominance', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Codominance", 'role': 'assistant'}]