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: Pathology
The following chemical mediator is a product of arachidonic add metabolite by cyclo oxygenase pathway 
Select and explain. 
A. LxA4, B. LxB4, C. 5-HETE, D. PGH2
D: PGH2
Answer: D: PGH2 
Explanation: None