This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Citrovorum factor is given along with all the drugs except 
Select and explain. 
A. Methotrexate, B. Pemetrexed, C. Pyrimethamine, D. Cytosine arabinoside
D: Cytosine arabinoside
Answer: D: Cytosine arabinoside 
Explanation: Citrovorum factor or rescue factor or folinic acid -active form of folic acid is given along with antifolate drugs like Methotrexate, pemetrexed,pyrimethamine, cotrimoxazole,5 fluorouracil.Ref: Tripati 6thed.Pg : 592