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
Mechanism of action of aspirin is inhibition of : 
Select and explain. 
A. Thromboxane A2 synthesis, B. Phosphodiesterase, C. HMG-CoA reductase, D. Pancreatic lipase
A: Thromboxane A2 synthesis
Answer: A: Thromboxane A2 synthesis 
Explanation: None