This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Medicine
[{'content': 'Which of the following is a histological featureof &; Whipple&;s disease- \nSelect and explain. \nA. Infiltration of histocytes in the lamina propria, B. Granuloma in the lamina, C. Macrophages with PAS (+) material inside the lamina propria, D. Eosinophils in the lamina propna', 'role': 'user'}, {'content': 'Answer: C \nExplanation: <p>Davidson&;s principles and practice of medicine 22nd edition. #whipple&;s disease caused by tropheryma whipplei ,become resident within macrophage of bowel mucosa.Vili are widened containing macrophages in the lamina proprio which stains positive with PAD. </p>', 'role': 'assistant'}]