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': "True about Laplace's law are all, except \nSelect and explain. \nA. P=T/r, B. P = 2T/r, C. T = WP/r, D. T = Pr/w", 'role': 'user'}, {'content': 'Answer: D \nExplanation: T = Pr/wLAW OF LAPLACE:States that tension (T) in the wall of a cylinder is equal to the product of transmural pressure (P) & radius (r) divided by wall thickness (w).I.e., T = Pr/w.', 'role': 'assistant'}]