This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': "Ectopic mucosa of Meckel's diverticulum is diagnosed by: \nSelect and explain. \nA. Tc-99 radionuclide scan, B. Angiography, C. CT, D. Endoscopy", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Tc-99 radionuclide scanRef: Sabiston 19th edition, Pages 1268-1270* Tc99m radionuclide scan is based on the presence of ectopic gastric mucosa.* The sensitivity of the scan can be increased by giving glucagon, pentagastrin or cimetidine.', 'role': 'assistant'}]