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 defined as "expulsion of fetus" less than....................gms : 
Select and explain. 
A. 500, B. 800, C. 900, D. 1000
A: 500
Answer: A: 500 
Explanation: 500