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': 'Gastrointestinal stromal malignancy arises from which of the following - \nSelect and explain. \nA. Smooth muscle, B. Nerve cells, C. Interstitial cells of Cajal, D. Vascular Endothelium', 'role': 'user'}, {'content': 'Answer: C \nExplanation: "Gastrointestinal stromal tumors (GIST) originate from the interstitial cells of Cajal, which controls gastrointestinal\xa0peristalsis."\n\nOn rare occasions, gastric GISTs occur as part of tumor - syndrome, such as :-\n\n\nCarney\'s trads\xa0→ Gastric GIST, Paraganglioma and pulmonary chondroma.\nNeurofibromatosis Type I\n\n\nHistologically, GISTs can be divided into\n\n\nSpindle types\xa0→\xa0Exhibit spindle cells\nEpithelioid types\xa0→\xa0Exhibit epithelioid cells\nMixed types\xa0→ A mixture of both', 'role': 'assistant'}]