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
Steroid suphatase deficiency is seen in – 
Select and explain. 
A. Ichthyosis vulgaris, B. Lamellar Ichthyosis, C. 'X' linked recessive ichthyosis, D. None of the above
C: 'X' linked recessive ichthyosis
Answer: C: 'X' linked recessive ichthyosis 
Explanation: In X-linked recessive ichthyosis there is deficiency of steroid sulphatase enzyme.