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: Gynaecology & Obstetrics
[{'content': 'Different routes of H treatment include A/E : \nSelect and explain. \nA. Transdermal patch, B. Vaginal pellets, C. Injectables, D. Oral', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Injectables', 'role': 'assistant'}]