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: Social & Preventive Medicine
True about composition of hospital waste –
 a) Metal 1%
 b) Paper 15%
 c) Glass 5%
 d) Infectious waste 3%
 e) Plastica 3% 
Select and explain. 
A. ab, B. bc, C. cd, D. ae
A: ab
Answer: A: ab 
Explanation: None