This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
Which of the following is not used for throm-bopro phylaxis: 
Select and explain. 
A. Heparin, B. Warfarin, C. Antithrombin III, D. Aspirin
C: Antithrombin III
Answer: C: Antithrombin III 
Explanation: Antithrombin is a peptide that is synthesised in the liver and circulates in the plasma . Other three are drugs that can be used prophylactically. From medical pharmacology padmaja 4th edition Page no 334