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': 'Foam cells seen in -a)  Alport syndromeb)  Niemann pick diseasec)  Atherosclerosisd)  Pneumonia \nSelect and explain. \nA. ab, B. bc, C. abc, D. bcd', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Foam cells are seen in\n\nNiemann pick disease \xa0 \xa0 \xa0 \xa0\xa0\nHypercholesterolemia \xa0 \xa0 \xa0 \xa0\xa0\nTangier disease \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\nAlport syndrome\xa0\xa0\xa0\xa0\nCholesterosis of gall bladder\nHodgkin disease (nodular sclerosis variant) o Ductal hyperplasia of breast.\nAtherosclerosis', 'role': 'assistant'}]