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: Anatomy
[{'content': 'At birth, mental foramen opens: \nSelect and explain. \nA. Below sockets of deciduous canines, B. In front of socket of deciduous canine, C. Below sockets of deciduous molars, D. Behind sockets of deciduous molars', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Key concept:\nAt birth the mental foramen, opens below the sockets for the two deciduous molar teeth near the lower border.\nThis is so because the bone is made up only of the alveolar part with teeth sockets. The mandibular\xa0 canal runs near the lower border. The foramen and canal gradually shift upwards.', 'role': 'assistant'}]