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: Unknown
The commonest prostaglandin used for the termination of 2nd trimester pregnancy: 
Select and explain. 
A. PGE1, B. PGI2, C. PGA2, D. 15 methyl PGF2
D: 15 methyl PGF2
Answer: D: 15 methyl PGF2 
Explanation: Methods of termination of pregnancy: 
Second Trimester (13-20 weeks):

Intrauterine instillation of hypertonic solutions
	
Intra amniotic à 20% saline, 40% urea mannitol
Extra amniotic à Ethacrydine lactate


Prostaglandins F2a and E2
Oxytocin infusion
Hysterotomy