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
Not true about GIST - 
Select and explain. 
A. Stomach is the most common site, B. High propensity of malignant change, C. Associated with c-KIT mutation, D. Histology shows spindle shaped cells
B: High propensity of malignant change
Answer: B: High propensity of malignant change 
Explanation: The prognosis depends on tumor size, mitotic index & location.
Recurrence or metastasis common for mitotic active tumors & more than 10cm but not for others.