This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin tumors, Subject name: Dental
which of the is not a NEVUS of melanocyte- 
Select and explain. 
A. Mongolian spot, B. Spitz naevi, C. Nevus of oto, D. Becker Nevus
D: Becker Nevus
Answer: D: Becker Nevus 
Explanation: Classification of melanocytic and pigmented naevi 1. Congenital melanocytic naevi 2. Acquired melanocytic naevi Junctional naevi Compound naevi Intradermal naevi 3. Other pigmented naevi Spitz naevi Mongolian naevi Naevus of ota Speckled and lentiginous naevus Dysplastic naevus From illustrated synopsis of dermatology and sexually transmitted diseases neena khanna 5th edition page no 379