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: Pathology
Which of the following is the most likely (among them)
to turn malignant? 
Select and explain. 
A. Intradermal nevus, B. Junctional nevus, C. Lichen planus, D. Papilloma
B: Junctional nevus
Answer: B: Junctional nevus 
Explanation: None