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': 'True about mitochondrial DNA:\n(A)Linear\n(B)Circular\n(C)Transmitted by mother only\n(D)Transmitted by both parents\n(E)Contains less gene than nuclear DNA \nSelect and explain. \nA. BCE, B. ABD, C. DAE, D. CAB', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]