This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
[{'content': 'At what age does the child who knows his age, gender, name, can draw a circle and make a tower of 9 cubes? \nSelect and explain. \nA. 2 years, B. 3 years, C. 4 years, D. 5 years', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 3 years Important milestones of a 3 years child* Rides tricycle* Knows his age and sex.* Stands momentarily on one foot* Repeat a sentence of 6 syllables* Draws a circle* Has a vocabulary of 250 words* Can dress or undress himself completely* Counts 3 objects correctly* Builds tower of 10 cubes* Can withhold and postpone bowel movement", 'role': 'assistant'}]