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
Most common cause of Aboion : 
Select and explain. 
A. Ovofetal factor, B. Maternal hypoxia, C. Uterine fibroid, D. Cervical incompetence
A: Ovofetal factor
Answer: A: Ovofetal factor 
Explanation: Ovofetal factor