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
Riehl's melanosis mainly invloves ? 
Select and explain. 
A. Face and Neck, B. Trunk, C. Extremities, D. Palms only
A: Face and Neck
Answer: A: Face and Neck 
Explanation: A. i.e. Face & Neck