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: Pharmacology
Which of the following is used to treat methotrexate toxicity : 
Select and explain. 
A. Folic acid, B. Folinic acid, C. Riboflavin, D. Cyanocobalamine
B: Folinic acid
Answer: B: Folinic acid 
Explanation: None