42. 用下列何種染色法,可以清晰地呈現出淋巴器官內的網狀纖維(reticular fiber)?(A)蘇木素染色(hematoxylin staining)(B)伊紅染色(eosin staining)(C)銀染色(silver staining)(D)油紅O染色(oil red O staining)