This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Operative Gynaecology, Subject name: Gynaecology & Obstetrics
[{'content': 'What is used to aid identification of areas of dysplasia in colposcopy? \nSelect and explain. \nA. 3 -5% acetic acid, B. Acetocarmine red, C. 1 % formic acid, D. 1 % alcohol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 3 - 5% acetic acid o Colposcopy is the mainstay in the diagnosis of cervical dysplasia and precancerous lesions.o Acetic acid and lugols iodine are used to aid in identifying areas of dysplasia.", 'role': 'assistant'}]