This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psoriasis, Subject name: Dental
'Pseudo-isomorphic' phenomenon is seen with? 
Select and explain. 
A. Vitiligo, B. Lichen planus, C. Psoriasis, D. Was
D: Was
Answer: D: Was 
Explanation: Pseudo-isomorphic' phenomenon is seen with viral was. other disease causing pseudo-isomorphic phenomenon that is moluscum contagiosum Isomorphic Phenomenon: Also called Koebner's phenomenon. Development of isomorphic pathologic lesions in the traumatized uninvolved skin of patients who have cutaneous diseases. Diseases causing true isomorphic phenomenon are Psoriasis,Lichen planus, vitiligo, lichen nitidus, etc.