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
A genodermal disease that can cause skin malignancy are – 
Select and explain. 
A. Xeroderma pigmentosa, B. Neurofibromatosis, C. Actinic keratosis, D. Porphyria cutanea tarda
A: Xeroderma pigmentosa
Answer: A: Xeroderma pigmentosa 
Explanation: Xeroderma pigmentosa is a genodemaatosis which can cause skin malignancy.
Neurofibromatosis (a genodermatosis) also predisposes to malignancy, but it is extra-cutaneous malignancy (not skin malignancy).