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: Biochemistry
[{'content': 'Which steroid is formed from cholesterol without hydroxylation ? \nSelect and explain. \nA. Progesterone, B. Glucocoicoid, C. Mineralocoicoid, D. Estradiol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., ProgesteroneProgesterone is formed before hydroxylation step.", 'role': 'assistant'}]