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': 'Female homologue of scrotum is \nSelect and explain. \nA. Labia majora, B. Labia minora, C. Vagina, D. Vestibule', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Embryologically, Labia majora are homologous with male scrotum.', 'role': 'assistant'}]