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: Medicine
[{'content': 'To differentiate restrictive cardiomypathy and constrictive pericarditis, features favouring constrictive pericarditis are -a) Diastolic pressures are equalisedb) There is mild pericardial effusionc) Thick pericardium is presentd) RV size in increased \nSelect and explain. \nA. ad, B. c, C. ac, D. ab', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]