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
Low molecular weight heparin mainly inhibits which factor: September 2009 
Select and explain. 
A. Factor Ilia, B. Factor VIIIa, C. Factor Xa, D. Factor XIIa
C: Factor Xa
Answer: C: Factor Xa 
Explanation: Ans. C: Factor Xa