This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
The drug being given is 
Select and explain. 
A. Ethacrydine lactate (0.1%), B. 20% mannitol, C. 50% Urea, D. Misoprostol
A: Ethacrydine lactate (0.1%)
Answer: A: Ethacrydine lactate (0.1%) 
Explanation: Ethacridine lactate (0.1%) is used only extra - amniotically.