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': 'Pulmonary endothelium is NOT concerned with which of the following: \nSelect and explain. \nA. Lipoprotein lipase, B. Plasminogen activator, C. Thrombin, D. Factor X', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]