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: Skin
A young lady presents with lacy lesions in oral cavity and genitals, and her proximal nail fold has extended onto the nail bed. What is the likely diagnosis 
Select and explain. 
A. Lichen planus, B. Candidiasis, C. Both, D. None
A: Lichen planus
Answer: A: Lichen planus 
Explanation: A i.e. Lichen planus