During Entry of a Togavirus Virion, Which of the Following

During entry of a togavirus virion, which of the following events may help disrupt the nucleocapsids and release the genomic RNA into the host cell?

A) Uptake of the virion into the endosome.
B) The increase in pH inside the endosome.
C) Degradation of the capsid proteins by the viral protease.
D) Binding of the ribosomes to the genomic RNA.
E) Binding of viral polymerase to the genomic RNA.