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: Pathology
[{'content': 'Which of the following is the most specific marker for Gastro Intestinal Stromal Tumor ? \nSelect and explain. \nA. Desmin, B. SMA, C. DOG - 1, D. S - 100', 'role': 'user'}, {'content': 'Answer: C \nExplanation: DOG - 1 is most specific marker for GIST', 'role': 'assistant'}]