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
All are true about heparin except : 
Select and explain. 
A. Antidote is protamine sulfate, B. Can be administered only in vivo, C. Cannot be given orally, D. Increases APTT
B: Can be administered only in vivo
Answer: B: Can be administered only in vivo 
Explanation: None