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 normally developing 10 month old child should be able to do all of the following, EXCEPT: \nSelect and explain. \nA. Stand alone, B. Play peek a boo, C. Pick up a pellet with thumb and index finger, D. Build a tower of 3-4 cubes', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A child can make a tower of 2 cubes by 12-20 months and 5 cubes by 16-24 months. He can stand alone, pick up things using thumb and index finger, and can play peek a boo. Ref: Essential Pediatrics By O P Ghai, 6th Edition, Page 46; R. A. in Pediatrics Spl. Vol. 19 Developmental and Behavioral Pediatrics by ... By Jaypee Brothers, Medical Publishers, Gupte, 2007, Page 15', 'role': 'assistant'}]