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
Which of the following maternal factors is most commonly associated with first-trimester pregnancy loss? 
Select and explain. 
A. Advanced maternal age, B. Incompetent cervix, C. Intrauterine infection, D. Hyperemesis gravidarum
A: Advanced maternal age
Answer: A: Advanced maternal age 
Explanation: The incidence of First trimester aboions increases dramatically after maternal age exceeds 35 years.