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
What is used to aid identification of areas of dysplasia in colposcopy? 
Select and explain. 
A. 3 -5% acetic acid, B. Acetocarmine red, C. 1 % formic acid, D. 1 % alcohol
A: 3 -5% acetic acid
Answer: A: 3 -5% acetic acid 
Explanation: 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.