Think about a virus with a plus strand RNA genome 8 kb in length, which encodes eight proteins. Determine which of the following is a known mechanism for producing all eight proteins from this genome?

A. A single polyprotein is synthesized which is then processed by proteases to form 8 proteins

B. The RNA is cleaved into 8 fragments, each of which is translated into a different protein

C. Immediately upon entering the cells, the virion-associated viral RNA polymerase produces 8 subgenomic mRNAs from the plus strand RNA genome

D. There is no way to produce multiple proteins from a eukaryotic RNA

E. A and C