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: Surgery
One of the disadvantages of breech loading, metallic type, self-aspirating, cartridge type syringe is 
Select and explain. 
A. Autoclavable, B. Rust resistant, C. Piston is scored, D. Weight
D: Weight
Answer: D: Weight 
Explanation: None