20. 下列各種血清免疫檢查對於Goodpasture's syndrome最具有診斷性?
(A) Cytoplasmic antineutrophil cytoplasmic antibody (C-ANCA)
(B) Antistreptolysin O (ASO) antibody titer
(C) Antiglomerular basement membrane antibody (Anti-GBM)
(D) Antinuclear antibody (ANA)
(E) Anti-HCV antibody