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
[{'content': 'Phrynoderma is NOT due to deficiency of \nSelect and explain. \nA. Essential fatty acids, B. Vit A, C. Vit D, D. Vit B', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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', 'role': 'assistant'}]