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: Pharmacology
The drug used for first-trimester abortion is: 
Select and explain. 
A. Oral mifepristone, B. Intra–amniotic saline, C. Extra–amniotic ethacridine lactate, D. Oxytocin infusion
A: Oral mifepristone
Answer: A: Oral mifepristone 
Explanation: None