To Promote the Translational Activity of Ribosomes in Human Cells

To promote the translational activity of ribosomes in human cells for synthesizing viral proteins during viral infection,viruses

A) chemically modify (e.g., cap and methylate) the transcripts.
B) keep a ribosome binding site specific to human ribosomes on their genome.
C) maintain introns and sometimes extrons in their genomes to appear as eukaryotic mRNA.
D) only adhere to and infect metabolically active host cells where protein synthesis is high.