This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: HAEM synth and porphyrias, Subject name: Biochemistry
[{'content': 'All of the following porphyria are inherited in autosomal dominant mode, EXCEPT: \nSelect and explain. \nA. Porphyria cutanea tarda, B. Congenital erythropoietic porphyria, C. Protoporphyria, D. Acute intermittent porphyria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Porphyrias are either inherited or acquired. All inherited porphyrias follow autosomal dominant mode, EXCEPT: Congenital erythropoietic porphyria which is inherited in Autosomal Recessive mode X-linked protoporphyria/sideroblastic anemia.', 'role': 'assistant'}]