During antigenic drift,the genes responsible for the surface antigens on virus capsids mutate,causing the antigens themselves to be different.This process can lead to a formerly harmless virus to become infectious if _________.
A) the new antigen will bind to receptor proteins on the host cells' surfaces
B) the new antigen will provide an effective way for the viruses to exit the host cells
C) the new antigen will provide the instructions for making new capsids
D) either the new antigen will bind to receptor proteins on the host cells' surfaces or the new antigen will provide an effective way for the viruses to exit the host cells
E) either the new antigen will provide an effective way for the viruses to exit the host cells or the new antigen will provide the instructions for making new capsids
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