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': 'Tocolytics are beneficial in preterm labour because: \nSelect and explain. \nA. They arrest preterm labour, B. They decrease prenatal moality, C. They provide time for antenatal steroids, D. They prolong pregnancy to term', 'role': 'user'}, {'content': 'Answer: C \nExplanation: They provide time for antenatal steroids', 'role': 'assistant'}]