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
Which one of the following is not a pyridoxine dependent disorder – 
Select and explain. 
A. Homocystinuria, B. Methyl–malonic–acidemia, C. Cystathioninuria, D. Xanthurenic aciduria
B: Methyl–malonic–acidemia
Answer: B: Methyl–malonic–acidemia 
Explanation: For methyl malonic acidemia, Vit B1, isgiven.
I am not sure about option c & d.