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: Dental
Koebner's phenomenon is seen in – a) Lichen planusb) Wartsc) Bechet syndromed) Psoriasise) Viggo 
Select and explain. 
A. bce, B. abde, C. abcd, D. acde
B: abde
Answer: B: abde 
Explanation: None