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 climbs with alternate steps, builds a tower8- 9 cubes, tells 'I' but not his name and can not say his age and sex, the probable age is - \nSelect and explain. \nA. 36 months, B. 24 months, C. 30 months, D. 48 months", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 30 months o A child climbs stairs with alternating feet, refers to self as 'I' and builds a tower of 9 cubes by the age of 30 months. o A child knows his gender and age by 3 years.", 'role': 'assistant'}]