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 15-year-old female presents with primary amenorrhea. Her breasts are Tanner 4 but she has no axillary or pubic hair The most likely diagnosis is : \nSelect and explain. \nA. Turner's syndrome, B. Mullerian agenesis, C. Testicular feminization syndrome, D. Premature ovarian failure", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Testicular feminization syndrome', 'role': 'assistant'}]