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
Amount of waste infectious produced in hospitals- 
Select and explain. 
A. 45%, B. 65%, C. 80%, D. 100%
A: 45%
Answer: A: 45% 
Explanation: .