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': 'Ferning ol cervical mucu3 depends on : \nSelect and explain. \nA. Eslrogen, B. Progesterone, C. LH, D. FSH', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Eslrogen', 'role': 'assistant'}]