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': '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: harshmohan textbook of pathology 7th edition ABO blood grouping shows codominance as both alleles of a gene pair are expressed in heterozygous state', 'role': 'assistant'}]