This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Pincer grasp is attained by ___ months. \nSelect and explain. \nA. 4, B. 12, C. 10, D. 18', 'role': 'user'}, {'content': 'Answer: C \nExplanation: O.P. Ghai 8th ed, page49', 'role': 'assistant'}]