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': 'Thrombomodulin I is produced by all of the following EXCEPT \nSelect and explain. \nA. Splanchnic circulation, B. Skin circulation, C. Cerebral circulation, D. Muscle circulation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Cerebral circulation', 'role': 'assistant'}]