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: Gynaecology & Obstetrics
Aboion is the expulsion or extraction from the uterus, spontaneous or induced, or the fetus or embryo weighing: 
Select and explain. 
A. Less than 100 gm, B. Less than 50 gm, C. Less than 250 gm, D. Less than 500 gm
D: Less than 500 gm
Answer: D: Less than 500 gm 
Explanation: Less than 500 gm