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 normally developed but she has no axillary or public hair The most likely diagnosis is \nSelect and explain. \nA. turner's syndrome, B. Testicular feminization syndrome, C. Mullerian agenesis, D. Premature ovarian failure", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Testicular feminizing syndrome\n\nGenotype is 46XY, Phenotype is female\nThe gonads are testes often present in the inguinal canal. \nGonads produce testosterone and Mullerian inhibiting substance, but because of androgen insensitivity at target organs, Patients have\nLack of axillary and pubic hair and normally developed breasts \nAbsent uterus and upper vagina \nMay have a blind pouch of lower vagina', 'role': 'assistant'}]