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: Dental
[{'content': 'Growth of oral structures is mainly influenced by factors: \nSelect and explain. \nA. Hereditary, B. Environmental, C. Hereditary-influenced by environmental factor, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Van Limborgh after review of the sutural theory,\xa0cartilaginous theory and functional matrix theory has summarized the following features:\n1. Intrinsic genetic factor controls chondrocranial growth.\n2. Epigenetic factors originating from skull cartilages and head tissues control desmocranial growth.\n3. Local environmental factors, like tension forces\xa0and pressure, influence the growth of desmocranial\xa0growth.\n4. General epigenetic and general environmental factors are less significant in craniofacial growth.\nKey Concept:\nGrowth of oral structures is mainly inﬂuenced by factors Hereditary-inﬂuenced by environmental factors.', 'role': 'assistant'}]