This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'A mother brings her 16 yr old daughter to gynaec OPD with complaints of not attaining menarche She gives his cyclical abdominal pain On faher examination midline abdominal swelling seen per rectal examination reveals bulging mass in vagina which of the following do you suspect \nSelect and explain. \nA. Imperforate hymen, B. transverse vaginal septum, C. MRKH, D. vaginal agenesis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pt suffering from PRIMARY armenorrhea Cryptomemorrhea = cyclical abdominal pain PV should not be done in adolescents hence PR DONE REF: SHAW GYNECOLOGY', 'role': 'assistant'}]