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
Heparin does not cause : 
Select and explain. 
A. Osteoporosis, B. Factor V inhibition, C. Thrombocytopenia, D. Prolongation of aPTT
B: Factor V inhibition
Answer: B: Factor V inhibition 
Explanation: None