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': 'According to cephalo caudal gradient of growth axis of growth: \nSelect and explain. \nA. Decreases from head towards feet., B. Increases from head towards feet., C. Increases from feet towards head ., D. Decreases from feet towards head.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Axis of growth increases from Head towards Feet\n3rd month IU = Head 50% of Body length\nBirth : Head 30% of body length\nAdult = Head\xa012% of that of body length.', 'role': 'assistant'}]