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: Pediatrics
Toad skin is seen in deficiency of vitamin ? 
Select and explain. 
A. A, B. B2, C. D, D. Biotin
A: A
Answer: A: A 
Explanation: Ans. is 'a' i.e., A o Here, essential fatty acid has not been provided as an option. So, amongst the given options vitamin 'A' is the best answer.