This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hospital waste and disaster management, Occupational health, Subject name: Social & Preventive Medicine
Not true about Screw feed technique is 
Select and explain. 
A. 80% volume reduction, B. Pathological waste are removed, C. Weight is decreased by 20-30%, D. Based on non-burn thermal treatment
B: Pathological waste are removed
Answer: B: Pathological waste are removed 
Explanation: SCREW-FEED TECHNOLOGY: Principle: Non-burn dry thermal process Process: Shredding of waste Heating in a rotating auger Reduction in waste: Reduction in weight: 20-35% Reduction in volume: 80% Useful for wastes: Infectious waste Sharps Not useful for wastes: Pathological waste Cytotoxic waste Radioactive waste Ref: Park 25th edition Pgno: 828