This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolic disorders, Subject name: Pediatrics
Treatment of multiple carboxylase deficiency 
Select and explain. 
A. Biotin, B. Pyridoxine, C. Thiamine, D. Folic acid
A: Biotin
Answer: A: Biotin 
Explanation: Treatment of multiple carboxylase or biotinidase deficiency is biotin.Oral dose is 10-40 mg/kg/day Reference:Essential pediatrics-Ghai,8th edition,page no:650