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
ACNA is sensitive and specific for: 
Select and explain. 
A. Post streptococcal glomerulonephritis, B. Idiopathic cresentic glomerulonephritis, C. Diffuse glomerulosclerosis, D. Henoch's schonlein_purpura
B: Idiopathic cresentic glomerulonephritis
Answer: B: Idiopathic cresentic glomerulonephritis 
Explanation: Answer is B (Idiopathic crecentric glomerulonephritis) Crescentric glomerulonephritis is associated with antimyeloperoxidase antibodies. The major target for perinuclear ANCA (p-ANCA) is the enzyme myeloperoxidase