Proteolysis of the Influenza ________ Produces a Fusion Peptide, Which

Proteolysis of the influenza ________ produces a fusion peptide, which initially binds to a ________ glycoprotein on the host's cell membrane that serves as a receptor.

A) hemagglutinin; syalic acid
B) neuraminidase; N-acetylglucosamine
C) matrix; fucose
D) nuclear-packaging protein; mannose
E) nucleocapsid protein; glucosamine