This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Dental
Phrynoderma is NOT due to deficiency of 
Select and explain. 
A. Essential fatty acids, B. Vit A, C. Vit D, D. Vit B
C: Vit D
Answer: C: Vit D 
Explanation: PHRYNODERMA(toad-skin disease):- May be a manifestation of vitamin A deficiency, though it may also be due to deficiency of essential fatty acids and even vitamin B. Manifests as rough, hyperkeratotic follicular papules around elbows and knees. Ref:- NEENA KHANNA; pg num:- 391