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
Type of pericarditis in tuberculosisa) Hemorrhagicb) Constrictivec)  Fibrinousd)  Serofibrinous 
Select and explain. 
A. ac, B. ab, C. ad, D. bc
B: ab
Answer: B: ab 
Explanation: Causes of hemorrhagic pericarditis

Tuberculosis
Malignant involvement of pericardial sac
Bleeding diathesis
Cardiac surgery
Post myocardial infarction
Dissecting aneurysm of aorta
Uremic pericarditis