This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
Radiopharmaceutical used for liver scan is 
Select and explain. 
A. Technetium 99m sulphur colloid, B. Tc99m mebrofenin, C. Tc-99m MIBI, D. Tc99m DTPA
A: Technetium 99m sulphur colloid
Answer: A: Technetium 99m sulphur colloid 
Explanation: A radio active subtance called radio pharmaceutical is formed or radio active tracer is formed by addition of a radioactive atom to a moleclue absorbed by a normal liver tissue.