This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autacoids, Subject name: Pharmacology
[{'content': 'Which prostaglandin helps in cervical ripening? \nSelect and explain. \nA. PGI2, B. PGF2, C. PGE2, D. PGD2', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Dinoprostone - PGE2. Orally - to augmenting labor & to check PPH. Vaginally- softens the cervix before labor induction. Preferred over oxytocin for labor induction in pre-eclampsia, eclampsia, cardiac & renal disease. ESSENTIALS OF MEDICAL PHARMACOLOGY;7TH EDITION;KD TRIPATHI;PAGE NO 189', 'role': 'assistant'}]