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
Apixaban is a new drug that acts by : 
Select and explain. 
A. Inhibiting TNF alpha, B. Inhibiting coagulation factor Xa, C. Inhibiting platelet aggregation, D. Activating plasminogen
B: Inhibiting coagulation factor Xa
Answer: B: Inhibiting coagulation factor Xa 
Explanation: Rivaroxaban and Apixaban are newer oral anticoagulants that act by inhibiting factor Xa.
Newer oral anticoagulants that are currently being asked in the exams are:

Dabigatran (Direct thrombin inhibitor)
Rivaroxaban
Apixaban