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 Pre-malignant conditions of vulva present with "Cake icing effect" \nSelect and explain. \nA. Vulval intraepithelial neoplasia, B. Lichen sclerosis, C. Paget\'s disease of vulva, D. Leukoplakia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Extramammary paget\'s disease of vulva is characterised by well-demarcated erythematous lesion affecting the vulva with "cake - icing effect".', 'role': 'assistant'}]