The Nurse Teaches a Client with Genital Herpes That a Virus

The nurse teaches a client with genital herpes that a virus is known as an intracellular parasite because:

A) it is surrounded by a protein coat called a capsid.
B) it affects only one species of living organism.
C) it contains DNA or RNA,but not necessarily both.
D) it is incapable of causing infection unless it has invaded a host cell.