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
Keratoderma is a feature of – 
Select and explain. 
A. Pityriasis rubra pilaris, B. Pemphigus, C. Pityriasis rosea, D. Psoriasis
A: Pityriasis rubra pilaris
Answer: A: Pityriasis rubra pilaris 
Explanation: None