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
Thalidomide acts through : 
Select and explain. 
A. Inhibiting angiogenesis, B. Inhibiting thymidylate synthase, C. Inhibition of Topo–isomerase I, D. Inhibition of Topo–isomerase II
A: Inhibiting angiogenesis
Answer: A: Inhibiting angiogenesis 
Explanation: None