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: Physiology
[{'content': 'Steroid receptor superfamily is present in: \nSelect and explain. \nA. Vitamin D3, B. Insulin, C. Glucagon, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All\xa0steroid,\xa0thyroid,\xa0Vit.D\xa0and\xa0retinoids includes in steroid hormone superfamily.', 'role': 'assistant'}]