The correct option is
D Both A and B
Amitosis involves only nucleus and cytoplasm cleavage not chromosomal differentiation. Nucleus separates into one or more parts, which have no reproductive potential. It is a mode of reproduction in bacteria and some protista. It occurs horizontally (in Paramecium) or vertically (in Euglena).
Since, virus is living only inside host body, it does not multiply by amitosis.
Thus, the correct answer is option (D).