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 normal infant sits briefly leaning forward on her hands, reaches for and grasps a cube and transfer it from hand to hand. She babbles but canot wave bye-bye nor can she grasp objects with the finger and thumb. Her age is - \nSelect and explain. \nA. 4 months, B. 7 months, C. 10 months, D. 14 months', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 7 months o A normal infant sits leaning forward on his hands and babbles by 7 months. o An infant transfer the object from one hand to other by 5-7 months.", 'role': 'assistant'}]