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
[{'content': 'Which of the following maternal factors is most commonly associated with first-trimester pregnancy loss? \nSelect and explain. \nA. Advanced maternal age, B. Incompetent cervix, C. Intrauterine infection, D. Hyperemesis gravidarum', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The incidence of First trimester aboions increases dramatically after maternal age exceeds 35 years.', 'role': 'assistant'}]