Which of the Following Would Help a Virus Avoid Triggering

Multiple Choice

Which of the following would help a virus avoid triggering an effective adaptive immune response?
I. having frequent mutations in genes for surface proteins
II. building the viral shell from host proteins
III. producing proteins very similar to those of other viruses
IV. infecting and killing helper T cells

A) only I and III
B) only I, II, and IV
C) only I, II, and III
D) only II, III, and IV