This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mullerian Abnormalities, Subject name: Gynaecology & Obstetrics
[{'content': 'Hematocolpos is seen in: \nSelect and explain. \nA. Septate uterus, B. Bicornuate uterus, C. Unicornuate uterus, D. Imperforate hymen', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hematocolpos is defined as vagina filled with blood which is seen in imperforate hymen. Hematometra is defined as collection (or) retention of blood in the uterus. NOTE: hematocolpos may also be seen in other veical fusion defects causing obstruction to menstrual blood outflow like transverse vaginal septum but not in any lateral fusion defects as mentioned in the question.', 'role': 'assistant'}]