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: Pediatrics
[{'content': 'A child of 4 years can do all of the following except: September 2009 \nSelect and explain. \nA. Skip, B. Goes down stairs one foot per step, C. Tell a story, D. Copies triangle', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: Copies Triangle Milestones achieved by a 4 year old child: A. Motor: Goes down stairs one foot per step Skips on one foot Imitates gate with cubes Copies a cross B. Speech: Questioning at its height. Many infantile substitutions in speech Says a song; tells stories C. Other: Dresses and undresses with assistance. Attends to own toilet needs', 'role': 'assistant'}]