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': "In sicher's theory, suture acts as \nSelect and explain. \nA. Has independent growth potential, B. Dependent on cranial base, C. Used for growth adjustment, D. None of above", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]