This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
What is the acceptable limit of bacterial count in an OT for neurosurgery? 
Select and explain. 
A. 50 per cubic feet, B. 1 per cubic feet, C. 10 per cubic feet, D. 5 per cubic feet
B: 1 per cubic feet
Answer: B: 1 per cubic feet 
Explanation: Bacterial exam of air is done by Various methods and upper limits in surgical theatres are 10 per cubic feet and 1 per cubic feet in surgical OT for neurosurgery Ref: Textbook of Microbiology Baveja 5th ed Pg 636