Which of the Following Conditions During Infection with a Paramyxovirus

Multiple Choice

Which of the following conditions during infection with a paramyxovirus causes the RNA-dependent RNA polymerase to switch from start-stop transcription to production of full-length positive-strand antigenomes?

A) Levels of the mRNAs transcribed.
B) Concentration of the N protein.
C) Proteolytic cleavage of the polymerase protein.
D) Phosphorylation of the polymerase protein.
E) Levels of the L protein.