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': '. A girl presents with; primary amenorrhea; grade V thelarche, grade II pubarche; no axillary hair; likely diagnosis is: \nSelect and explain. \nA. Testicular feminisation syndrome, B. Mullerian agenesis, C. Turners syndrome, D. Gonadal dysgenesis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]