The VP30 protein from Ebola virus activates synthesis of the NP mRNAs by doing which of the following?

A) Helps bring nucleotide triphosphates to the viral RNA polymerase.
B) Acts as a helicase to unwind the RNA template.
C) Counteracts the negative effects of a stem-loop at the 5' end of the mRNA.
D) Participates in the RNA editing process.
E) Causes the RNA polymerase to bind to the NP promoter more tightly.