Since chimpanzees are genetically very similar to humans, ______.
A.
chimpanzees are likely to suffer AIDS just like humans if they are infected.
B.
it does not matter if human beings are infected with SIV rather than HIV - 1.
C.
we can use human vaccines to prevent chimpanzees from getting AIDS virus.
D.
AIDS vaccines based on chimp' s immune mechanism are possible to be made.