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
[{'content': 'Dinoprost is - \nSelect and explain. \nA. PG El, B. PGE2, C. PGF2 alpha, D. PGI2', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., PG F2 alpha o Dinoprost - PG F2 alpha, intraamniotically for midterm aboion. o Dinoprostone - PG E2, intravaginally for midterm aboion.", 'role': 'assistant'}]