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': 'Which of the following is the commonest site of fibroma? \nSelect and explain. \nA. Labia majora, B. Labia minora, C. Clitoris, D. Rudimentary hymen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Fibroma is a rare benign tumor of the vulva arises from deep connective tissues by fibroblast proliferation. Lesions are primarily found on the labia majora. Larger lesions often become pedunculated with a long stalk and may cause pain or dyspareunia. Surgical excision is indicated for symptomatic lesions. Ref: Hoffman B.L., Schorge J.O., Schaffer J.I., Halvorson L.M., Bradshaw K.D., Cunningham F.G., Calver L.E. (2012). Chapter 4. Benign Disorders of the Lower Reproductive Tract. In B.L. Hoffman, J.O. Schorge, J.I. Schaffer, L.M. Halvorson, K.D. Bradshaw, F.G. Cunningham, L.E. Calver (Eds), Williams Gynecology, 2e.', 'role': 'assistant'}]