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
[{'content': 'Which of the following leukotrienes helping in Leukocyte adhesion? \nSelect and explain. \nA. LTB4, B. LTD4, C. LTE4, D. LTC4', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ACTION METABOLITE Vasoconstriction Thromboxane A2, leukotrienes C4, D4, E4 Vasodilation PGI2, PGE2, PGD2 Increased vascular permeability Leukotrienes C4, D4, E4 Chemotaxis, leukocyte adhesion LTB4, lipoxins Ref: Robbins Pathology 7th Ed Page 69.', 'role': 'assistant'}]