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': "All of the following statements are true except ? \nSelect and explain. \nA. PG's and leukotriences are derived from arachidonic acid, B. Cox-I is an inducible enzyme, C. Cox II is induced by cytokines at sites of inflammation, D. Leukotrienes cause smooth ms. constriction", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Cox I is an inducible enzymes o Cox-2 is an inducible enzyme, not Cox-1.", 'role': 'assistant'}]