This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Aboions, Spontaneous & Induced Emergency Contraception (Hey,whats the hurry !), Subject name: Gynaecology & Obstetrics
Most common cause of first trimester aboion: 
Select and explain. 
A. Genetic factors, B. Endocrine disorders, C. Immunological disorders, D. Infection
A: Genetic factors
Answer: A: Genetic factors 
Explanation: Common Causes of aboion First trimester: 1. Genetic factors (50%) 2. Endocrine disorders (luteal phase defect, thyroid abnormalities, and diabetes) 3. Immunological disorders (autoimmune and alloimmune) 4. Infection 5. Unexplained