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': 'Bidextrous grip is seen at what age? \nSelect and explain. \nA. 4 months, B. 5 months, C. 6 months, D. 7 months', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. 4 monthsFINE MOTOR MILESTONES: AgeMilestone4 monthsBidextrous reach6 monthsUnidextrous reach9 monthsImmature pincer grasp12monthsMature pincer grasp15monthsImitates scribbling, tower of 2 blocks18monthsScribbles, tower of 3 blocks2 yearsTower of 6 blocks, veical & circular stroke3 yearsTower of 9 blocks, copies circle4 yearsCopies cross, bridge with blocks5 yearsCopies triangle', 'role': 'assistant'}]