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 baby can follows an object with 180°, can hold neck, can sit with support but can not sit without support.The age of the baby is – a)  1 monthb)  3 monthsc)  5 monthsd)  6 monthse)  9 months \nSelect and explain. \nA. cd, B. bc, C. bd, D. ac', 'role': 'user'}, {'content': "Answer: A \nExplanation: A child follows object upto 180° by 3 months, ---- Meharban Singh 3'.d/e 67.\nNeck holding develops by 3 months.\nA child can sit with support by 5 months and can sit without support by 8 months.\nSo, the age of this child is between 5-8 months, which may be 5 months (option c) or 6 months (option d) or 7 months.", 'role': 'assistant'}]