Which of the Following Represents a Difference Between Viruses and Viroids

Multiple Choice

Which of the following represents a difference between viruses and viroids?

A) Viruses infect many types of cells, whereas viroids infect only prokaryotic cells.
B) Viruses have capsids composed of protein, whereas viroids have no capsids.
C) Viruses contain introns; viroids have only exons.
D) Viruses always have genomes composed of DNA, whereas viroids always have genomes composed of RNA.
E) Viruses cannot pass through plasmodesmata; viroids can.