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': 'The milestones achieved at 13 months in children are all except - \nSelect and explain. \nA. Index finger approach, B. Walking, C. Casting, D. Single words', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Casting", 'role': 'assistant'}]