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
All of the following statements are true except ? 
Select and explain. 
A. 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
B: Cox-I is an inducible enzyme
Answer: B: Cox-I is an inducible enzyme 
Explanation: Ans. is 'b' i.e., Cox I is an inducible enzymes o Cox-2 is an inducible enzyme, not Cox-1.