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: Surgery
[{'content': 'Absolute contraindications of heart transplantation -a) HIV infectionb) Age > 60 yearsc) Irreversible pulmonary hypertensiond) Significant pulmonary vascular diseasee) Malignancy \nSelect and explain. \nA. acd, B. bde, C. ace, D. ade', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]