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
Dyskeratosis is characteristic feature of : 
Select and explain. 
A. Darrier's ds, B. Pemphigus vulgaris, C. Psoriasis, D. All
A: Darrier's ds
Answer: A: Darrier's ds 
Explanation: A i.e. Darrier's ds