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: Pharmacology
[{'content': 'The unique property of SERMs is that they: \nSelect and explain. \nA. Have both estrogenic and progestational agonistic activity, B. Inhibits the aromatase enzyme that is required for estrogen synthesis, C. Produces estrogenic effect without binding to estrogen receptors, D. Act as agonist in some tissues and antagonist in other tissues', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]