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
What is false about GIST - 
Select and explain. 
A. Associated with c-kit mutation, B. Most common site is stomach, C. Associated with CD 117, D. Least common mesenchymal neoplasm of gastrointestinal tract
D: Least common mesenchymal neoplasm of gastrointestinal tract
Answer: D: Least common mesenchymal neoplasm of gastrointestinal tract 
Explanation: Answer- D. Least common mesenchymal neoplasm of gastrointestinal tractGISTs are the most common mesenchymal neoplasm of gastrointestinal tract.The most useful marker of GIST is c-kit (CD-117).The most common site being the stomach followed by small intestine.