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
The antidote for heparin is: 
Select and explain. 
A. Penicillinase, B. Protamine sulphate, C. Pryosulphate, D. Potassium sulphate
B: Protamine sulphate
Answer: B: Protamine sulphate 
Explanation: None