Why Would Cytomegalovirus Retinitis Especially Affect Those on Immunosuppressants

Multiple Choice

Why would cytomegalovirus retinitis especially affect those on immunosuppressants?

A) Those on immunosuppressants are less susceptible to contracting viruses and would therefore not be affected.
B) The opportunistic dormant virus is able to cause infections in the eyes because of suppression of immune system.
C) The virus feeds off the immunosuppressant drugs.
D) Healthy individuals do not carry the virus;only those who need immunosuppression carry the virus.