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: Medicine
Safest transplantation approach in liver disease- 
Select and explain. 
A. Directly transplanting embryonic stem cell in the liver, B. Transplanting donor hepatocytes into liver, C. Transplanting mesenchymal stem cell from adipose tissue to liver, D. Injecting erythropoietin into body
C: Transplanting mesenchymal stem cell from adipose tissue to liver
Answer: C: Transplanting mesenchymal stem cell from adipose tissue to liver 
Explanation: Answer- C. Transplanting mesenchymal stem cell from adipose tissue to liverToday, autologous (from the patient) adipose tissue stem cell are the only stem cells that have been used clinically for treating liver disease.Many trials have shown that patients with liver cirrhosis have benefitted from autologous adipose tissue derived mesenchymal stem cells