This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Motor Milestones, Subject name: Pediatrics
[{'content': 'At what age the child begins to do the following? \nSelect and explain. \nA. 2 weeks, B. 4 weeks, C. 8 weeks, D. 12 weeks', 'role': 'user'}, {'content': 'Answer: D \nExplanation: By 12 weeks, the child can lift his head above the horizontal plane in prone position.', 'role': 'assistant'}]