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: Gynaecology & Obstetrics
[{'content': 'Carcinoma cervix with involvement of upper 2/3rd of vagina is stage................: \nSelect and explain. \nA. II A, B. II B, C. III A, D. III B', 'role': 'user'}, {'content': 'Answer: A \nExplanation: II A', 'role': 'assistant'}]