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: Anatomy
[{'content': "Which of the following organs is not involved in Whipple's disease \nSelect and explain. \nA. Hea, B. CNS, C. Lungs, D. GI tract", 'role': 'user'}, {'content': 'Answer: C \nExplanation: The organs in which these foamy macrophages can be seen are liver, small intestine, lymph nodes, hea,eyes,CNS,synvoial membrane of joints Refer Robbins 9/e p 792', 'role': 'assistant'}]