This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Medicine
Which of the following is complication of heparin? 
Select and explain. 
A. Bleeding, B. Thrombocytopenia, C. Osteoporosis, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. D. All of the aboveAnticoagulantsHeparin: Activating antithrombin (previously known as antithrombin III)Side Effectsa. Bleedingb. Thrombocytopenia:c. Osteoporosisd. Elevated Levels of Transaminases: without a concomitant increase in the level of bilirubin.