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
Mesna is given with cyclophosphamide to ? 
Select and explain. 
A. Increase absroption, B. Decrease excretion, C. Amolierate haemorrhagic cystitis, D. Decrease metabolism
C: Amolierate haemorrhagic cystitis
Answer: C: Amolierate haemorrhagic cystitis 
Explanation: Ans. is 'c' i.e., Ameliorate haemorrhagic cystitis