This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Staphylococci, Subject name: Microbiology
Best available option to prevent MRSA infection in a hospital - 
Select and explain. 
A. Prophylactic antibiotics, B. Fumigation of wards, C. Proper hand washing, D. Use of disinfectants
C: Proper hand washing
Answer: C: Proper hand washing 
Explanation: Ans. is 'c'i.e., Proper hand washing "Given the prominence of cross infection, hand hygiene is the single most important preventive measure in hospitals. "